J. Robert Oppenheimer (1904–1967) was an American theoretical physicist best known as the scientific director of the Manhattan Project's Los Alamos Laboratory during World War II, earning the title "father of the atomic bomb". He studied at Harvard and the University of Göttingen, contributing to quantum mechanics and nuclear physics. In 1945, he witnessed the first nuclear test, Trinity, before the bombs were dropped on Japan. Later, as director of the Institute for Advanced Study, he opposed the hydrogen bomb and advocated for nuclear control. Despite losing his security clearance amid Cold War tensions, his legacy was restored in 2022 when Jennifer Granholm vacated that decision.
Jan 23 2015
Oct 28 1972Early life
Childhood and education
Oppenheimer was born Julius Robert Oppenheimer1 into a non-observant Jewish family in New York City on April 22, 1904, to Ella (née Friedman), a painter, and Julius Seligmann Oppenheimer, a successful textile importer.23 Robert had a younger brother, Frank, who also became a physicist.4 His father was born in Hanau, when it was still part of the Hesse-Nassau province of the Kingdom of Prussia, and as a teenager made his way to the United States in 1888, without money, higher education, or even English. He was hired by a textile company and within a decade was an executive there, eventually becoming wealthy.5 In 1912, the family moved to an apartment on Riverside Drive near West 88th Street, Hudson Heights, New York, an area known for luxurious mansions and townhouses.6 Their art collection included works by Pablo Picasso, Édouard Vuillard, and Vincent van Gogh.7
Oppenheimer was initially educated at Alcuin Preparatory School. In 1911, he entered the Ethical Culture Society School,8 founded by Felix Adler to promote training based on the Ethical movement, whose motto was "Deed before Creed". Oppenheimer's father had been a member of the Society for many years, serving on its board of trustees.9 Oppenheimer was a versatile student, interested in English and French literature, and particularly mineralogy.10 He completed third and fourth grades in one year and skipped half of eighth grade.11 He took private music lessons by famous French flutist Georges Barrère. During his final year of school, Oppenheimer became interested in chemistry.12 He graduated in 1921, but his further education was delayed a year by an attack of colitis contracted while prospecting in Jáchymov during a family vacation in Czechoslovakia. He recovered in New Mexico, where he developed a love for horseback riding and the southwestern United States.13
Oppenheimer entered Harvard College in 1922 at age 18. He majored in chemistry; Harvard also required studies in history, literature, and philosophy or mathematics. To compensate for the delay caused by his illness, he took six courses each term instead of the usual four. He was admitted to the undergraduate honor society Phi Beta Kappa and was granted graduate standing in physics on the basis of independent study, allowing him to bypass basic courses in favor of advanced ones. He was attracted to experimental physics by a course on thermodynamics taught by Percy Bridgman. Oppenheimer graduated from Harvard in 1925 with a Bachelor of Arts, summa cum laude, after only three years of study.14
Studies in Europe
After being accepted at Christ's College, Cambridge, in 1924, Oppenheimer wrote to Ernest Rutherford requesting permission to work at the Cavendish Laboratory, though Bridgman's letter of recommendation said that Oppenheimer's clumsiness in the laboratory suggested that theoretical, rather than experimental, physics would be his forte. Rutherford was unimpressed, but Oppenheimer went to Cambridge nonetheless;15 J. J. Thomson ultimately accepted him on the condition that he complete a basic laboratory course.16
Oppenheimer was very unhappy at Cambridge and wrote to a friend: "I am having a pretty bad time. The lab work is a terrible bore, and I am so bad at it that it is impossible to feel that I am learning anything."17 He developed an antagonistic relationship with his tutor, Patrick Blackett, a future Nobel laureate. According to Oppenheimer's friend Francis Fergusson, Oppenheimer once confessed to leaving a poisoned apple on Blackett's desk, and Oppenheimer's parents convinced the university authorities not to expel him. There are no records of either a poisoning incident or probation, but Oppenheimer had regular sessions with a psychiatrist in Harley Street, London.18192021 Oppenheimer was a tall, thin chain smoker,22 who often neglected to eat during periods of intense concentration. Many friends said he could be self-destructive. Fergusson once tried to distract Oppenheimer from apparent depression by telling him about his girlfriend, Frances Keeley, and how he had proposed to her. Oppenheimer jumped on Fergusson and tried to strangle him. Oppenheimer was plagued by periods of depression throughout his life,2324 and once told his brother, "I need physics more than friends."25
In 1926, Oppenheimer left Cambridge for the University of Göttingen to study under Max Born; Göttingen was one of the world's leading centers for theoretical physics. Oppenheimer made friends who went on to great success, including Werner Heisenberg, Pascual Jordan, Wolfgang Pauli, Paul Dirac, Enrico Fermi and Edward Teller. He was enthusiastic in discussions to the point of sometimes taking them over.26 Maria Goeppert presented Born with a petition signed by herself and others threatening a boycott of the class unless he made Oppenheimer quiet down. Born left it out on his desk where Oppenheimer could read it, and it was effective without a word being said.27
Oppenheimer obtained his Doctor of Philosophy degree in March 1927 at age 23, supervised by Born.2829 After the oral exam, James Franck, the professor administering it, reportedly said, "I'm glad that's over. He was on the point of questioning me."30 Oppenheimer published more than a dozen papers while in Europe, including many important contributions to the new field of quantum mechanics. He and Born published a famous paper on the Born–Oppenheimer approximation, which separates nuclear motion from electronic motion in the mathematical treatment of molecules, allowing nuclear motion to be neglected to simplify calculations. It remains his most cited work.31
Early career
Teaching
Oppenheimer was awarded a United States National Research Council fellowship to the California Institute of Technology (Caltech) in September 1927. Bridgman also wanted him at Harvard, so a compromise was reached whereby he split his fellowship for the 1927–28 academic year between Harvard in 1927 and Caltech in 1928.32 At Caltech, he struck up a close friendship with Linus Pauling; they planned to mount a joint attack on the nature of the chemical bond, a field in which Pauling was a pioneer, with Oppenheimer supplying the mathematics and Pauling interpreting the results. The collaboration, and their friendship, ended after Oppenheimer invited Pauling's wife, Ava Helen Pauling, to join him on a tryst in Mexico.33 Oppenheimer later invited Pauling to be head of the Chemistry Division of the Manhattan Project, but Pauling refused, saying he was a pacifist.34
In the autumn of 1928, Oppenheimer visited Paul Ehrenfest's institute at the University of Leiden in the Netherlands, where he impressed by giving lectures in Dutch, despite having little experience with the language. There, he was given the nickname of Opje,35 later anglicized by his students as "Oppie".36 From Leiden, he continued on to the Swiss Federal Institute of Technology in Zurich to work with Wolfgang Pauli on quantum mechanics and the continuous spectrum. Oppenheimer respected and liked Pauli and may have emulated his personal style as well as his critical approach to problems.37
On returning to the United States, Oppenheimer accepted an associate professorship from the University of California, Berkeley, where Raymond Thayer Birge wanted him so badly that he expressed a willingness to share him with Caltech.38
Before he began his Berkeley professorship, Oppenheimer was diagnosed with a mild case of tuberculosis and spent some weeks with his brother Frank at a New Mexico ranch, which he leased and eventually purchased. When he heard the ranch was available for lease, he exclaimed, "Hot dog!", and he later called it Perro Caliente ("hot dog" in Spanish).39 Later, he used to say that "physics and desert country" were his "two great loves".40 He recovered from tuberculosis and returned to Berkeley, where he prospered as an advisor and collaborator to a generation of physicists who admired him for his intellectual virtuosity and broad interests. His students and colleagues saw him as mesmerizing: hypnotic in private interaction, but often frigid in more public settings. His associates fell into two camps: one saw him as an aloof and impressive genius and aesthete, the other as a pretentious and insecure poseur.41 His students almost always fell into the former category, adopting his walk, speech, and other mannerisms, and even his inclination for reading entire texts in their original languages.42 Hans Bethe said of him:
Probably the most important ingredient he brought to his teaching was his exquisite taste. He always knew what were the important problems, as shown by his choice of subjects. He truly lived with those problems, struggling for a solution, and he communicated his concern to the group. In its heyday, there were about eight or ten graduate students in his group and about six Post-doctoral Fellows. He met this group once a day in his office and discussed with one after another the status of the student's research problem. He was interested in everything, and in one afternoon they might discuss quantum electrodynamics, cosmic rays, electron pair production and nuclear physics.43
Oppenheimer worked closely with Nobel Prize-winning experimental physicist Ernest Lawrence and his cyclotron pioneers, helping them understand the data that their machines were producing at Berkeley's Radiation Laboratory, which eventually developed into today's Lawrence Berkeley National Laboratory.44 In 1936, Berkeley promoted him to full professor at an annual salary of $3,300 (equivalent to $75,000 in 2024). In return, he was asked to curtail his teaching at Caltech, so a compromise was reached whereby Berkeley released him for six weeks each year, enough to teach one term at Caltech.45
Oppenheimer repeatedly attempted to get Robert Serber a position at Berkeley but was blocked by Birge, who felt that "one Jew in the department was enough".46
Scientific work
Oppenheimer did important research in theoretical astronomy (especially as related to general relativity and nuclear theory), nuclear physics, spectroscopy, and quantum field theory, including its extension into quantum electrodynamics. The formal mathematics of relativistic quantum mechanics also attracted his attention, although he doubted its validity. His work predicted many later finds, including the neutron, meson and neutron star.47
Initially, his major interest was the theory of the continuous spectrum. His first published paper, in 1926, concerned the quantum theory of molecular band spectra. He developed a method to carry out calculations of its transition probabilities. He calculated the photoelectric effect for hydrogen and X-rays, obtaining the absorption coefficient at the K-edge. His calculations accorded with observations of the X-ray absorption of the Sun, but not helium. Years later, it was realized that the Sun was largely composed of hydrogen and that his calculations were correct.4849
Oppenheimer made important contributions to the theory of cosmic ray showers. He also worked on the problem of field electron emission.5051 This work contributed to the development of the concept of quantum tunneling.52 In 1931, he co-wrote a paper, "Relativistic Theory of the Photoelectric Effect," with his student Harvey Hall,53 in which, based on empirical evidence, he correctly disputed Paul Dirac's assertion that two of the energy levels of the hydrogen atom have the same energy. Subsequently, one of his doctoral students, Willis Lamb, determined that this was a consequence of what became known as the Lamb shift, for which Lamb was awarded the Nobel Prize in Physics in 1955.54
With Melba Phillips, the first graduate student to begin her PhD under Oppenheimer's supervision,55 Oppenheimer worked on calculations of artificial radioactivity under bombardment by deuterons. When Ernest Lawrence and Edwin McMillan bombarded nuclei with deuterons they found the results agreed closely with the predictions of George Gamow, but when higher energies and heavier nuclei were involved, the results did not conform to the predictions. In 1935, Oppenheimer and Phillips worked out a theory—subsequently known as the Oppenheimer–Phillips process—to explain the results. This theory is still in use today.5657
As early as 1930, Oppenheimer wrote a paper that essentially predicted the existence of the positron. This was after a paper by Dirac proposed that electrons could have both a positive charge and negative energy. Dirac's paper introduced an equation, later known as the Dirac equation, that unified quantum mechanics, special relativity and the then-new concept of electron spin, to explain the Zeeman effect.58 Drawing on the body of experimental evidence, Oppenheimer rejected the idea that the predicted positively charged electrons were protons. He argued that they would have to have the same mass as an electron, whereas experiments showed that protons were much heavier than electrons. Two years later, Carl David Anderson discovered the positron, for which he received the 1936 Nobel Prize in Physics.59
In the late 1930s, Oppenheimer became interested in astrophysics, most likely through his friendship with Richard Tolman, resulting in a series of papers. In the first of these, "On the Stability of Stellar Neutron Cores" (1938),60 co-written with Serber, Oppenheimer explored the properties of white dwarfs. This was followed by a paper co-written with one of his students, George Volkoff, "On Massive Neutron Cores,"61 which demonstrated that there was a limit, known as the Tolman–Oppenheimer–Volkoff limit, to the mass of stars beyond which they would not remain stable as neutron stars and would undergo gravitational collapse. In 1939, Oppenheimer and another of his students, Hartland Snyder, produced the paper "On Continued Gravitational Contraction",62 which predicted the existence of what later became termed black holes. After the Born–Oppenheimer approximation paper, these papers remain his most cited, and were key factors in the rejuvenation of astrophysical research in the United States in the 1950s, mainly by John A. Wheeler.63
Oppenheimer's papers were considered difficult to understand even by the standards of the abstract topics he was expert in. He was fond of using elegant, if extremely complex, mathematical techniques to demonstrate physical principles, though he was sometimes criticized for making mathematical mistakes, presumably out of haste. "His physics was good", said his student Snyder, "but his arithmetic awful."64
After World War II, Oppenheimer published only five scientific papers, one of them in biophysics, and none after 1950. Murray Gell-Mann, a later Nobelist who, as a visiting scientist, worked with him at the Institute for Advanced Study in 1951, offered this opinion:
He didn't have Sitzfleisch, "sitting flesh," when you sit on a chair. As far as I know, he never wrote a long paper or did a long calculation, anything of that kind. He didn't have patience for that; his own work consisted of little aperçus, but quite brilliant ones. But he inspired other people to do things, and his influence was fantastic.65
Private and political life
Oppenheimer's mother died in 1931, and he became closer to his father who, although still living in New York, became a frequent visitor in California.66 When his father died in 1937, leaving $392,602 (equivalent to $8.6 million in 2024) to be divided between Oppenheimer and his brother Frank, Oppenheimer immediately wrote out a will that left his estate to the University of California to be used for graduate scholarships.67
Politics
During the 1920s, Oppenheimer remained uninformed about world affairs. He claimed that he did not read newspapers or popular magazines and only learned of the Wall Street crash of 1929 while he was on a walk with Ernest Lawrence six months after the crash occurred.6869 He once remarked that he never cast a vote until the 1936 presidential election. From 1934 on, he became increasingly concerned about politics and international affairs. In 1934, he earmarked three percent of his annual salary—about $100 (equivalent to $2,400 in 2024)—for two years to support German physicists fleeing Nazi Germany.70 During the 1934 West Coast Waterfront Strike, he and some of his students, including Melba Phillips and Serber, attended a longshoremen's rally.71
After the Spanish Civil War broke out in 1936, Oppenheimer hosted fundraisers for the Spanish Republican cause. In 1939, he joined the American Committee for Democracy and Intellectual Freedom, which campaigned against the persecution of Jewish scientists in Nazi Germany. Like most liberal groups of the era, the committee was later branded a communist front.72
Many of Oppenheimer's closest associates were active in the Communist Party in the 1930s or 1940s, including his brother Frank, Frank's wife Jackie,73 Kitty,74 Jean Tatlock, his landlady Mary Ellen Washburn,75 and several of his graduate students at Berkeley.76 Whether Oppenheimer was a party member has been debated. Cassidy states that he never openly joined the Communist Party USA (CPUSA),77 but Haynes, Klehr, and Vassiliev state that he "was, in fact, a concealed member of the CPUSA in the late 1930s".78 From 1937 to 1942, Oppenheimer was a member at Berkeley of what he called a "discussion group", which fellow members Haakon Chevalier7980 and Gordon Griffiths later said was a "closed" (secret) unit of the Communist Party for Berkeley faculty.81
The Federal Bureau of Investigation (FBI) opened a file on Oppenheimer in March 1941. It recorded that he attended a meeting in December 1940 at Chevalier's home that was also attended by the Communist Party's California state secretary, William Schneiderman, and its treasurer, Isaac Folkoff. The FBI noted that Oppenheimer was on the executive committee of the American Civil Liberties Union, which it considered a communist front organization. Shortly thereafter, the FBI added Oppenheimer to its Custodial Detention Index, for arrest in case of national emergency.82
When he joined the Manhattan Project in 1942, Oppenheimer wrote on his personal security questionnaire that he had been "a member of just about every Communist Front organization on the West Coast."83 Years later, he claimed that he did not remember writing this, that it was not true, and that if he had written anything along those lines, it was "a half-jocular overstatement".84 He was a subscriber to the People's World,85 a Communist Party organ, and testified in 1954, "I was associated with the communist movement."86
In 1953, Oppenheimer was on the sponsoring committee for a conference on "Science and Freedom" organized by the Congress for Cultural Freedom, an anti-communist cultural organization.87
At his 1954 security clearance hearings, Oppenheimer denied being a member of the Communist Party but identified himself as a fellow traveler, which he defined as someone who agrees with many of communism's goals but is not willing to blindly follow orders from any Communist Party apparatus.88 According to biographer Ray Monk: "He was, in a very practical and real sense, a supporter of the Communist Party. Moreover, in terms of the time, effort and money spent on party activities, he was a very committed supporter."89
Relationships and children
In 1936, Oppenheimer became involved with Jean Tatlock, the daughter of a Berkeley literature professor and a student at Stanford University School of Medicine. The two had similar political views; she wrote for the Western Worker, a Communist Party newspaper.90 In 1939, after a tempestuous relationship, Tatlock broke up with Oppenheimer. In August of that year, he met Katherine ("Kitty") Puening, a former Communist Party member. Kitty's first marriage had lasted only a few months. Her second, common-law, husband from 1934 to 1937 was Joe Dallet, an active member of the Communist Party killed in 1937 in the Spanish Civil War.91
Kitty returned from Europe to the U.S., where she obtained a Bachelor of Arts degree in botany from the University of Pennsylvania. In 1938 she married Richard Harrison, a physician and medical researcher, and in June 1939 moved with him to Pasadena, California, where he became chief of radiology at a local hospital and she enrolled as a graduate student at the University of California, Los Angeles. She and Oppenheimer created a minor scandal by sleeping together after one of Tolman's parties, and in the summer of 1940 she stayed with Oppenheimer at his ranch in New Mexico. When she became pregnant, Kitty asked Harrison for a divorce and he agreed to it. On November 1, 1940, she obtained a quick divorce in Reno, Nevada, and married Oppenheimer.9293
Their first child, Peter, was born in May 1941, and their second, Katherine ("Toni"), was born in Los Alamos, New Mexico, on December 7, 1944.94 During his marriage, Oppenheimer rekindled his affair with Tatlock.95 Later, their continued contact became an issue in his security clearance hearings because of Tatlock's communist associations.96
Throughout the development of the atomic bomb, Oppenheimer was under investigation by both the FBI and the Manhattan Project's internal security arm for his past left-wing associations. He was followed by Army security agents during a trip to California in June 1943 to visit Tatlock, who was suffering from depression. Oppenheimer spent the night in her apartment.97 Tatlock killed herself on January 4, 1944, leaving Oppenheimer deeply grieved.98
At Los Alamos, Oppenheimer began an emotional affair with Ruth Tolman, a psychologist and the wife of his friend Richard Tolman. The affair ended after Oppenheimer returned east to become director of the Institute for Advanced Study but, after Richard's death in August 1948, they reconnected and saw each other occasionally until Ruth's death in 1957. Few of their letters survive, but those that do reflect a close and affectionate relationship, with Oppenheimer calling her "My Love".99100
Mysticism
Oppenheimer's diverse interests sometimes interrupted his focus on science. He liked things that were difficult and since much of the scientific work appeared easy for him, he developed an interest in the mystical and the cryptic.101 After going to Harvard, he began to acquaint himself with the classical Hindu texts through their English translations.102 He also had an interest in learning languages and learned Sanskrit,103 under Arthur W. Ryder at Berkeley in 1933.104105 He eventually read literary works such as the Bhagavad Gita and Meghaduta in the original Sanskrit, and deeply pondered them. He later cited the Gita as one of the books that most shaped his philosophy of life.106107 He wrote to his brother that the Gita was "very easy and quite marvelous". He later called it "the most beautiful philosophical song existing in any known tongue", and gave copies of it as presents to his friends and kept a personal, worn-out copy on the bookshelf by his desk. He kept referring to it while directing the Los Alamos Laboratory, and quoted a passage from the Gita at the memorial service of President Franklin Roosevelt in Los Alamos.108109 He nicknamed his car Garuda, the mount bird of the Hindu god Vishnu.110
Oppenheimer never became a Hindu in the traditional sense; he did not join any temple nor pray to any god.111112 He "was really taken by the charm and the general wisdom of the Bhagavad-Gita," his brother said.113 It is speculated that Oppenheimer's interest in Hindu thought started during his earlier association with Niels Bohr. Both Bohr and Oppenheimer had been very analytical and critical about the ancient Hindu mythological stories and the metaphysics embedded in them. In one conversation with David Hawkins before the war, while talking about the literature of ancient Greece, Oppenheimer remarked, "I have read the Greeks; I find the Hindus deeper."114 Oppenheimer sat on the Board of Editors of the book series World Perspectives, which published a variety of books on philosophy.115 During the 1930s, while teaching at Berkeley, Oppenheimer became part of a group in the Bay Area that psychologist Siegfried Bernfeld convened to discuss psychoanalysis.116
His close confidant and colleague Isidor Isaac Rabi, who had seen Oppenheimer throughout his Berkeley, Los Alamos, and Princeton years, wondering "why men of Oppenheimer's gifts do not discover everything worth discovering",117 reflected that:
Oppenheimer was overeducated in those fields which lie outside the scientific tradition, such as his interest in religion, in the Hindu religion in particular, which resulted in a feeling for the mystery of the universe that surrounded him almost like a fog. He saw physics clearly, looking toward what had already been done, but at the border he tended to feel there was much more of the mysterious and novel than there actually was ... [he turned] away from the hard, crude methods of theoretical physics into a mystical realm of broad intuition.... In Oppenheimer the element of earthiness was feeble. Yet it was essentially this spiritual quality, this refinement as expressed in speech and manner, that was the basis of his charisma. He never expressed himself completely. He always left a feeling that there were depths of sensibility and insight not yet revealed. These may be the qualities of the born leader who seems to have reserves of uncommitted strength.118
In spite of this, observers such as physicists Luis Alvarez and Jeremy Bernstein have suggested that if Oppenheimer had lived long enough to see his predictions substantiated by experiment, he might have won a Nobel Prize for his work on gravitational collapse, concerning neutron stars and black holes.119120121 In retrospect, some physicists and historians consider this his most important contribution, though it was not taken up by other scientists in his lifetime.122 The physicist and historian Abraham Pais once asked Oppenheimer what he considered his most important scientific contributions—Oppenheimer cited his work on electrons and positrons, not his work on gravitational contraction.123 Oppenheimer was nominated for the Nobel Prize in Physics four times, in 1946, 1951, 1955, and 1967, but never won.124125
Manhattan Project
Los Alamos
Main article: Project Y
On October 9, 1941, two months before the United States entered World War II, President Franklin D. Roosevelt approved a crash program to develop an atomic bomb. On October 21, Ernest Lawrence brought Oppenheimer into what became the Manhattan Project. Oppenheimer was assigned to take over the project's specific bomb-design research by Arthur Compton at the Metallurgical Laboratory.126 On May 18, 1942,127 National Defense Research Committee Chairman James B. Conant, who had been one of Oppenheimer's lecturers at Harvard, asked Oppenheimer to take over work on fast neutron calculations, a task Oppenheimer threw himself into with full vigor. He was given the title "Coordinator of Rapid Rupture"; "rapid rupture" is a technical term that refers to the propagation of a fast neutron chain reaction in an atomic bomb. One of his first acts was to host a summer school for atomic bomb theory in Berkeley. The mix of European physicists and his own students—a group including Serber, Emil Konopinski, Felix Bloch, Hans Bethe, and Edward Teller—kept themselves busy by calculating what needed to be done, and in what order, to make the bomb.128129
In June 1942, the U.S. Army established the Manhattan Engineer District to handle its part in the atom bomb project, beginning the process of transferring responsibility from the Office of Scientific Research and Development to the military.130 In September, Brigadier General Leslie R. Groves Jr., was appointed director of what became known as the Manhattan Project.131 By October 12, 1942, Groves and Oppenheimer had decided that for security and cohesion, they needed to establish a centralized, secret research laboratory in a remote location.132
Groves selected Oppenheimer to head the project's secret weapons laboratory, although it is not known precisely when.133 This decision surprised many, because Oppenheimer had left-wing political views and no record as a leader of large projects. Groves worried that because Oppenheimer did not have a Nobel Prize, he might not have had the prestige to direct fellow scientists,134 but Groves was impressed by Oppenheimer's singular grasp of the practical aspects of the project and by the breadth of his knowledge. As a military engineer, Groves knew that this would be vital in an interdisciplinary project that would involve not just physics but also chemistry, metallurgy, ordnance, and engineering. Groves also detected in Oppenheimer something that many others did not, an "overweening ambition",135 which Groves reckoned would supply the drive necessary to push the project to a successful conclusion.136 Oppenheimer's past associations were not overlooked, but on July 20, 1943, Groves directed that he receive a security clearance "without delay irrespective of the information which you have concerning Mr Oppenheimer. He is absolutely essential to the project."137 Rabi considered Oppenheimer's appointment "a real stroke of genius on the part of General Groves, who was not generally considered to be a genius".138
Oppenheimer favored a location for the laboratory in New Mexico, not far from his ranch. On November 16, 1942, he, Groves and others toured a prospective site. Oppenheimer feared that the high cliffs surrounding it would feel claustrophobic, and there was concern about possible flooding. He then suggested a site he knew well: a flat mesa near Santa Fe, New Mexico, which was the site of a private boys' school, the Los Alamos Ranch School. The engineers were concerned about the poor access road and the water supply but otherwise felt that it was ideal.139 The Los Alamos Laboratory was built on the site of the school, taking over some of its buildings, while many new buildings were erected in great haste. At the laboratory, Oppenheimer assembled a group of the top physicists of the time, whom he called the "luminaries".140
Los Alamos was initially supposed to be a military laboratory, and Oppenheimer and other researchers were to be commissioned into the Army. He went so far as to order himself a lieutenant colonel's uniform and take the Army physical test, which he failed. Army doctors considered him underweight at 128 pounds (58 kg), diagnosed his chronic cough as tuberculosis, and were concerned about his chronic lumbosacral joint pain.141 The plan to commission scientists fell through when Rabi and Robert Bacher balked at the idea. Conant, Groves, and Oppenheimer devised a compromise whereby the University of California operated the laboratory under contract to the War Department.142 It soon turned out that Oppenheimer had hugely underestimated the magnitude of the project: Los Alamos grew from a few hundred people in 1943 to over 6,000 in 1945.143
Oppenheimer at first had difficulty with the organizational division of large groups but rapidly learned the art of large-scale administration after he took up permanent residence at Los Alamos. He was noted for his mastery of all scientific aspects of the project and for his efforts to control the inevitable cultural conflicts between scientists and the military. Victor Weisskopf wrote:
Oppenheimer directed these studies, theoretical and experimental, in the real sense of the words. Here his uncanny speed in grasping the main points of any subject was a decisive factor; he could acquaint himself with the essential details of every part of the work.
He did not direct from the head office. He was intellectually and physically present at each decisive step. He was present in the laboratory or in the seminar rooms, when a new effect was measured, when a new idea was conceived. It was not that he contributed so many ideas or suggestions; he did so sometimes, but his main influence came from something else. It was his continuous and intense presence, which produced a sense of direct participation in all of us; it created that unique atmosphere of enthusiasm and challenge that pervaded the place throughout its time.144
Bomb design
At this point in the war, there was considerable anxiety among the scientists that the German nuclear weapons program might be progressing faster than the Manhattan Project.145146 In a letter dated May 25, 1943, Oppenheimer responded to a proposal by Fermi to use radioactive materials to poison German food supplies. Oppenheimer asked Fermi whether he could produce enough strontium without letting too many in on the secret. Oppenheimer continued, "I think we should not attempt a plan unless we can poison food sufficient to kill a half a million men."147
In 1943, development efforts were directed to a plutonium gun-type fission weapon called "Thin Man". Initial research on the properties of plutonium was done using cyclotron-generated plutonium-239, which was extremely pure but could be created only in tiny amounts. When Los Alamos received the first sample of plutonium from the X-10 Graphite Reactor in April 1944, a problem was discovered: reactor-bred plutonium had a higher concentration of plutonium-240 (five times that of "cyclotron" plutonium), making it unsuitable for use in a gun-type weapon.148
In July 1944, Oppenheimer abandoned the Thin Man gun design in favor of an implosion-type weapon; a smaller version of Thin Man became Little Boy. Using chemical explosive lenses, a sub-critical sphere of fissile material could be squeezed into a smaller and denser form. The metal needed to travel only very short distances, so the critical mass would be assembled in much less time.149 In August 1944, Oppenheimer implemented a sweeping reorganization of the Los Alamos laboratory to focus on implosion.150 He concentrated the development efforts on the gun-type device, but now with a simpler design that only had to work with highly enriched uranium, in a single group. This device became Little Boy in February 1945.151 After a mammoth research effort, the more complex design of the implosion device, known as the "Christy gadget" after Robert Christy, another student of Oppenheimer's,152 was finalized as Fat Man in a meeting in Oppenheimer's office on February 28, 1945.153
In May 1945, an Interim Committee was created to advise and report on wartime and postwar policies regarding the use of nuclear energy. The Interim Committee established a scientific panel consisting of Oppenheimer, Arthur Compton, Fermi, and Lawrence to advise it on scientific issues. In its presentation to the Interim Committee, the panel offered its opinion not just on an atomic bomb's likely physical effects but also on its likely military and political impact.154 This included opinions on such sensitive issues as whether the Soviet Union should be advised of the weapon in advance of its use against Japan.155
Trinity
Main article: Trinity (nuclear test)
In the early morning hours of July 16, 1945, near Alamogordo, New Mexico, the work at Los Alamos culminated in the test of the world's first nuclear weapon. Oppenheimer had code-named the site "Trinity" in mid-1944, saying later that the name came from John Donne's Holy Sonnets; he had been introduced to Donne's work in the 1930s by Jean Tatlock, who killed herself in January 1944.156157
Brigadier General Thomas Farrell, who was present in the control bunker with Oppenheimer, recalled:
Dr. Oppenheimer, on whom had rested a very heavy burden, grew tenser as the last seconds ticked off. He scarcely breathed. He held on to a post to steady himself. For the last few seconds, he stared directly ahead and then when the announcer shouted "Now!" and there came this tremendous burst of light followed shortly thereafter by the deep growling roar of the explosion, his face relaxed into an expression of tremendous relief.158
Oppenheimer's brother Frank recalled Oppenheimer's first words as "I guess it worked."159160
According to a 1949 magazine profile, while witnessing the explosion Oppenheimer thought of verses from the Bhagavad Gita: "If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the mighty one ... Now I am become Death, the shatterer of worlds."161 In 1965 he recalled the moment this way:
We knew the world would not be the same. A few people laughed, a few people cried. Most people were silent. I remembered the line from the Hindu scripture, the Bhagavad Gita; Vishnu is trying to persuade the Prince that he should do his duty and, to impress him, takes on his multi-armed form and says, "Now I am become Death, the destroyer of worlds." I suppose we all thought that, one way or another.162163
Rabi described seeing Oppenheimer somewhat later: "I'll never forget his walk ... like High Noon ... this kind of strut. He had done it."164 Despite many scientists' opposition to using the bomb on Japan, Compton, Fermi, and Oppenheimer believed that a test explosion would not convince Japan to surrender.165 At an August 6 assembly at Los Alamos, the evening of the atomic bombing of Hiroshima, Oppenheimer took to the stage and clasped his hands together "like a prize-winning boxer" while the crowd cheered. He expressed regret that the weapon was ready too late for use against Nazi Germany.166
On August 17, however, Oppenheimer traveled to Washington to hand-deliver a letter to Secretary of War Henry L. Stimson expressing his revulsion and his wish to see nuclear weapons banned.167 In October he met with President Harry S. Truman, who dismissed Oppenheimer's concern about an arms race with the Soviet Union and belief that atomic energy should be under international control. Truman became infuriated when Oppenheimer said, "Mr. President, I feel I have blood on my hands", responding that he (Truman) bore sole responsibility for the decision to use atomic weapons against Japan, and later said, "I don't want to see that son of a bitch in this office ever again."168169
For his services as director of Los Alamos, Oppenheimer was awarded the Medal for Merit by Truman in 1946.170
Postwar activities
Once the public learned of the Manhattan Project after the bombings of Hiroshima and Nagasaki, Oppenheimer—suddenly a household name as the "father of the atomic bomb"—became a national spokesman for science, emblematic of a new type of technocratic power;171172173 he appeared on the covers of Life and Time.174175 Nuclear physics became a powerful force as nations realized the strategic and political power that atomic weapons conferred. Like many scientists of his generation, Oppenheimer felt that security from atomic bombs could come only from a transnational organization such as the newly formed United Nations, which could institute a program to stifle a nuclear arms race.176
Institute for Advanced Study
In November 1945, Oppenheimer left Los Alamos to return to Caltech,177 but soon found that his heart was no longer in teaching.178 In 1947, he accepted an offer from Lewis Strauss to take up the directorship of the Institute for Advanced Study in Princeton, New Jersey. This meant moving back east and leaving Ruth Tolman, the wife of his friend Richard Tolman, with whom he had begun an affair after leaving Los Alamos.179 The job came with a salary of $20,000 per annum, plus rent-free accommodation in the director's house, a 17th-century manor with a cook and groundskeeper, surrounded by 265 acres (107 ha) of woodlands.180 He collected European furniture, and French Post-Impressionist and Fauvist artworks. His art collection included works by Cézanne, Derain, Despiau, de Vlaminck, Picasso, Rembrandt, Renoir, Van Gogh and Vuillard.181
Oppenheimer brought together intellectuals at the height of their powers and from a variety of disciplines to answer the most pertinent questions of the age. He directed and encouraged the research of many well-known scientists, including Freeman Dyson, and the duo of Chen Ning Yang and Tsung-Dao Lee, who won a Nobel Prize for their discovery of parity non-conservation. He also instituted temporary memberships for scholars from the humanities, such as T. S. Eliot and George F. Kennan. Some of these activities were resented by a few members of the mathematics faculty, who wanted the institute to stay a bastion of pure scientific research. Abraham Pais said that Oppenheimer himself thought that one of his failures at the institute was being unable to bring together scholars from the natural sciences and the humanities.182
During a series of conferences in New York—the Shelter Island Conference in 1947, the Pocono Conference in 1948, and the Oldstone Conference in 1949—physicists transitioned from war work back to theoretical issues. Under Oppenheimer's direction, physicists tackled the greatest outstanding problem of the pre-war years: infinite, divergent, and seemingly nonsensical expressions in the quantum electrodynamics of elementary particles. Julian Schwinger, Richard Feynman and Shin'ichiro Tomonaga tackled the problem of regularization, and developed techniques that became known as renormalization. Freeman Dyson was able to prove that their procedures gave similar results. The problem of meson absorption and Hideki Yukawa's theory of mesons as the carrier particles of the strong nuclear force were also tackled. Probing questions from Oppenheimer prompted Robert Marshak's innovative two-meson hypothesis: that there are actually two types of mesons, pions and muons. This led to Cecil Frank Powell's breakthrough and subsequent Nobel Prize for the discovery of the pion.183184
Oppenheimer served as director of the institute until 1966, when he gave up the position due to his failing health.185 As of 2023, he is the longest-serving director of the institute.186
Atomic Energy Commission
As a member of the Board of Consultants to a committee appointed by Truman, Oppenheimer strongly influenced the 1946 Acheson–Lilienthal Report. In this report, the committee advocated the creation of an international Atomic Development Authority, which would own all fissionable material and the means of its production, such as mines and laboratories, and atomic power plants where it could be used for peaceful energy production. Bernard Baruch was appointed to translate this report into a proposal to the United Nations, resulting in the Baruch Plan of 1946. The Baruch Plan introduced many additional provisions regarding enforcement, in particular requiring inspection of the Soviet Union's uranium resources. It was seen as an attempt to maintain the United States' nuclear monopoly and rejected by the Soviets. With this, it became clear to Oppenheimer that an arms race was unavoidable, due to the mutual suspicion of the United States and the Soviet Union,187 which even Oppenheimer was starting to distrust.188
After the Atomic Energy Commission (AEC) came into being in 1947 as a civilian agency in control of nuclear research and weapons issues, Oppenheimer was appointed as the chairman of its General Advisory Committee (GAC). From this position, he advised on a number of nuclear-related issues, including project funding, laboratory construction and even international policy—though the GAC's advice was not always heeded.189 As chairman of the GAC, Oppenheimer lobbied vigorously for international arms control and funding for basic science, and attempted to influence policy away from a heated arms race.190
The first atomic bomb test by the Soviet Union in August 1949 came earlier than Americans expected, and over the next several months, there was an intense debate within the U.S. government, military, and scientific communities over whether to proceed with the development of the far more powerful, nuclear fusion–based hydrogen bomb, then known as "the Super".191 Oppenheimer had been aware of the possibility of a thermonuclear weapon since the days of the Manhattan Project and had allocated a limited amount of theoretical research work toward the possibility at the time, but nothing more than that, given the pressing need to develop a fission weapon.192 Immediately following the end of the war, Oppenheimer argued against continuing work on the Super at that time, due to both lack of need and the enormous human casualties that would result from its use.193194
Now in October 1949, Oppenheimer and the GAC recommended against the development of the Super.195 He and the other GAC members were motivated partly by ethical concerns, feeling that such a weapon could only be strategically used, resulting in millions of deaths: "Its use therefore carries much further than the atomic bomb itself the policy of exterminating civilian populations."196 They also had practical qualms, as there was no workable design for a hydrogen bomb at the time.197 Regarding the possibility of the Soviet Union developing a thermonuclear weapon, the GAC felt that the United States could have an adequate stockpile of atomic weapons to retaliate against any thermonuclear attack.198 In that connection, Oppenheimer and the others were concerned about the opportunity costs that would be incurred if nuclear reactors were diverted from materials needed for atom bomb production to the materials such as tritium needed for a thermonuclear weapon.199200
A majority of the AEC subsequently endorsed the GAC recommendation, and Oppenheimer thought that the fight against the Super would triumph, but proponents of the weapon lobbied the White House vigorously.201 On January 31, 1950, Truman, who was predisposed to proceed with the development of the weapon anyway, made the formal decision to do so.202 Oppenheimer and other GAC opponents of the project, especially James Conant, felt disheartened and considered resigning from the committee.203 They stayed on, though their views on the hydrogen bomb were well known.204
In 1951, Teller and mathematician Stanislaw Ulam developed the Teller–Ulam design for a hydrogen bomb.205 This new design seemed technically feasible and Oppenheimer officially acceded to the weapon's development,206 while still looking for ways in which its testing or deployment or use could be questioned.207 As he later recalled:
The program we had in 1949 was a tortured thing that you could well argue did not make a great deal of technical sense. It was therefore possible to argue also that you did not want it even if you could have it. The program in 1951 was technically so sweet that you could not argue about that. The issues became purely the military, the political and the humane problem of what you were going to do about it once you had it.208
Oppenheimer, Conant, and Lee DuBridge, another member who had opposed the H-bomb decision, left the GAC when their terms expired in August 1952.209 Truman had declined to reappoint them, as he wanted new voices on the committee who were more in support of H-bomb development.210 In addition, various opponents of Oppenheimer had communicated to Truman their desire that Oppenheimer leave the committee.211
Panels and study groups
Oppenheimer played a role on a number of government panels and study projects during the late 1940s and early 1950s, some of which thrust him into controversies and power struggles.212
In 1948, Oppenheimer chaired the Department of Defense's Long-Range Objectives Panel, a body created by AEC liaison Donald F. Carpenter.213 It looked at the military utility of nuclear weapons, including how they might be delivered.214 After a year's worth of study, in spring 1952, Oppenheimer wrote the draft report of Project GABRIEL, which examined the dangers of nuclear fallout.215 Oppenheimer was also a member of the Science Advisory Committee of the Office of Defense Mobilization.216
Oppenheimer participated in Project Charles during 1951, which examined the possibility of creating an effective air defense of the United States against atomic attack, and in the follow-on Project East River in 1952, which, with Oppenheimer's input, recommended building a warning system that would provide one-hour notice of an impending atomic attack against American cities.217 Those two projects led to Project Lincoln in 1952, a large effort on which Oppenheimer was one of the senior scientists.218 Undertaken at the MIT Lincoln Laboratory, which had recently been founded to study issues of air defense, this in turn led to the Lincoln Summer Study Group, in which Oppenheimer became a key figure.219 Oppenheimer's and other scientists' urging that resources be allocated to air defense in preference to large retaliatory strike capabilities brought an immediate response of objection from the United States Air Force (USAF),220 and debate ensued about whether Oppenheimer and allied scientists, or the Air Force, was embracing an inflexible "Maginot Line" philosophy.221 In any case, the Summer Study Group's work eventually led to the building of the Distant Early Warning Line.222
Teller, who had been so uninterested in work on the atomic bomb at Los Alamos during the war that Oppenheimer had given him time instead to work on his own project of the hydrogen bomb,223 left Los Alamos in 1951 to help found, in 1952, a second laboratory at what would become the Lawrence Livermore National Laboratory.224 Oppenheimer had defended the history of work done at Los Alamos and opposed the creation of the second laboratory.225
Project Vista looked at improving U.S. tactical warfare capabilities.226 Oppenheimer was a late addition to the project in 1951 but wrote a key chapter of the report that challenged the doctrine of strategic bombardment and advocated smaller tactical nuclear weapons which would be more useful in a limited theater conflict against enemy forces.227 Strategic thermonuclear weapons delivered by long-range jet bombers would necessarily be under the control of the U.S. Air Force, whereas the Vista conclusions recommended an increased role for the U.S. Army and U.S. Navy as well.228 The Air Force reaction to this was immediately hostile,229 and it succeeded in getting the Vista report suppressed.230
During 1952, Oppenheimer chaired the five-member State Department Panel of Consultants on Disarmament,231 which first urged that the United States postpone its planned first test of the hydrogen bomb and seek a thermonuclear test ban with the Soviet Union, on the grounds that avoiding a test might forestall the development of a catastrophic new weapon and open the way for new arms agreements between the two nations.232 But the panel lacked political allies in Washington, and the Ivy Mike shot went ahead as scheduled.233 The panel then issued a final report in January 1953, which, influenced by many of Oppenheimer's deeply felt beliefs, presented a pessimistic vision of the future in which neither the United States nor the Soviet Union could establish effective nuclear superiority but both sides could inflict terrible damage on the other.234
One of the panel's recommendations, which Oppenheimer felt was especially important,235 was that the U.S. government practice less secrecy and more openness toward the American people about the realities of the nuclear balance and the dangers of nuclear warfare.236 This notion found a receptive audience in the new Eisenhower administration and led to the creation of Operation Candor.237 Oppenheimer subsequently presented his view on the lack of utility of ever-larger nuclear arsenals to the American public in a June 1953 article in Foreign Affairs,238239 and it received attention in major American newspapers.240
Thus by 1953, Oppenheimer had reached another peak of influence, being involved in multiple different government posts and projects and having access to crucial strategic plans and force levels.241 But at the same time, he had become the enemy of the proponents of strategic bombardment, who viewed his opposition to the H-bomb, followed by these accumulated positions and stances, with a combination of bitterness and distrust.242 This view was paired with their fear that Oppenheimer's fame and powers of persuasion had made him dangerously influential in government, military, and scientific circles.243
Security hearing
Main article: Oppenheimer security clearance hearing
The FBI under J. Edgar Hoover had been following Oppenheimer since before the war, when he showed Communist sympathies as a professor at Berkeley and had been close to members of the Communist Party, including his wife and brother. They strongly suspected that he himself was a member of the party, based on wiretaps in which party members referred to him or appeared to refer to him as a communist, as well as reports from informers within the party.244 He had been under close surveillance since the early 1940s, his home and office bugged, his phone tapped and his mail opened.245
In August 1943, Oppenheimer told Manhattan Project security agents that George Eltenton, whom he did not know, had solicited three men at Los Alamos for nuclear secrets on behalf of the Soviet Union. When pressed on the issue in later interviews, Oppenheimer admitted that the only person who had approached him was his friend Haakon Chevalier, a Berkeley professor of French literature, who had mentioned the matter privately at a dinner at Oppenheimer's house.246
The FBI furnished Oppenheimer's political enemies with evidence that intimated communist ties. These enemies included Strauss, an AEC commissioner who had long harbored resentment against Oppenheimer both for his activity in opposing the hydrogen bomb and for his humiliation of Strauss before Congress some years earlier. Strauss had expressed opposition to exporting radioactive isotopes to other nations, and Oppenheimer had called them "less important than electronic devices but more important than, let us say, vitamins."247
On June 7, 1949, Oppenheimer testified before the House Un-American Activities Committee that he had associations with the Communist Party USA in the 1930s.248 He testified that some of his students, including David Bohm, Giovanni Rossi Lomanitz, Philip Morrison, Bernard Peters, and Joseph Weinberg had been communists at the time they had worked with him at Berkeley. Frank Oppenheimer and his wife Jackie testified before HUAC that they had been members of the Communist Party USA. Frank was subsequently fired from his University of Minnesota position. Unable to find work in physics for many years, he became a cattle rancher in Colorado. He later taught high school physics and was the founder of the San Francisco Exploratorium.249250
The triggering event for the security hearing happened on November 7, 1953,251 when William Liscum Borden, who until earlier in the year had been the executive director of the United States Congress Joint Committee on Atomic Energy, sent Hoover a letter saying that "more probably than not J. Robert Oppenheimer is an agent of the Soviet Union."252 Eisenhower never exactly believed the allegations in the letter but felt compelled to move forward with an investigation,253 and on December 3, he ordered that a "blank wall" be placed between Oppenheimer and any government or military secrets.254
On December 21, 1953, Strauss told Oppenheimer that his security clearance had been suspended, pending resolution of a series of charges outlined in a letter, and discussed his resigning by way of requesting termination of his consulting contract with the AEC.255 Oppenheimer chose not to resign and requested a hearing instead.256 The charges were outlined in a letter from Kenneth D. Nichols, general manager of the AEC.257258 Nichols, who had thought highly of Oppenheimer's work on the earlier Long-Range Objectives Panel,259 said that "in spite of [Oppenheimer's] record he is loyal to the United States."260 He nonetheless drafted the letter, but later wrote that he was "not happy with the inclusion of a reference concerning Oppenheimer's opposition to the hydrogen bomb development."261
The hearing that followed in April–May 1954, which was held in secret, focused on Oppenheimer's past communist ties and his association during the Manhattan Project with suspected disloyal or communist scientists.262 It then continued with an examination of Oppenheimer's opposition to the H-bomb and stances in subsequent projects and study groups.263 A transcript of the hearings was published in June 1954,264 with some redactions. In 2014, the U.S. Department of Energy made the full transcript public.265266
One of the key elements in this hearing was Oppenheimer's earliest testimony about George Eltenton's approach to various Los Alamos scientists, a story that Oppenheimer confessed he had fabricated to protect his friend Haakon Chevalier. Unknown to Oppenheimer, both versions were recorded during his interrogations of a decade before. He was surprised on the witness stand with transcripts of these, which he had not been given a chance to review. In fact, Oppenheimer had never told Chevalier that he had finally named him, and the testimony had cost Chevalier his job. Both Chevalier and Eltenton confirmed mentioning that they had a way to get information to the Soviets, Eltenton admitting he said this to Chevalier and Chevalier admitting he mentioned it to Oppenheimer, but both put the matter in terms of gossip and denied any thought or suggestion of treason or thoughts of espionage, either in planning or in deed. Neither was ever convicted of any crime.267
Teller testified that he considered Oppenheimer loyal to the U.S. government, but that:
In a great number of cases, I have seen Dr. Oppenheimer act—I understand that Dr. Oppenheimer acted—in a way which for me was exceedingly hard to understand. I thoroughly disagreed with him in numerous issues and his actions frankly appeared to me confused and complicated. To this extent I feel that I would like to see the vital interests of this country in hands which I understand better, and therefore trust more. In this very limited sense I would like to express a feeling that I would feel personally more secure if public matters would rest in other hands.268
Teller's testimony outraged the scientific community, and he was virtually ostracized from academic science.269 Ernest Lawrence refused to testify, pleading an attack of ulcerative colitis, but an interview in which Lawrence condemned Oppenheimer was submitted in evidence.270
Many top scientists, as well as government and military figures, testified on Oppenheimer's behalf. Physicist Isidor Isaac Rabi said that the suspension of the security clearance was unnecessary: "he is a consultant, and if you don't want to consult the guy, you don't consult him, period."271 But Groves testified that, under the stricter security criteria in effect in 1954, he "would not clear Dr. Oppenheimer today".272
At the conclusion of the hearings, the board revoked Oppenheimer's clearance by a 2–1 vote.273 It unanimously cleared him of disloyalty, but a majority found that 20 of the 24 charges were either true or substantially true and that Oppenheimer would represent a security risk.274 Then on June 29, 1954, the AEC upheld the findings of the Personnel Security Board, by a 4–1 decision, with Strauss writing the majority opinion.275 In that opinion, he stressed Oppenheimer's "defects of character", "falsehoods, evasions and misrepresentations", and past associations with Communists and people close to Communists as the primary reasons for his determination. He did not comment on Oppenheimer's loyalty.276
During his hearing, Oppenheimer testified on the left-wing activities of ten of his colleagues and previous acquaintances, mostly in reference to activities in the late 1930s.277 These ten people's activities were already public knowledge through prior hearings and activities (such as Addis, Chevelier, Lambert, May, Pitman, and I. Folkoff) or already known to the FBI.278 Some believe that had his clearance not been stripped, he might have been remembered as someone who "named names" to save his own reputation,279 but as it happened, most in the scientific community saw him as a martyr to McCarthyism, an eclectic liberal unjustly attacked by warmongering enemies, symbolic of the shift of scientific work from academia into the military.280 Wernher von Braun told a Congressional committee: "In England, Oppenheimer would have been knighted."281
In a seminar at The Wilson Center in 2009, based on an extensive analysis of the Vassiliev notebooks taken from the KGB archives, John Earl Haynes, Harvey Klehr and Alexander Vassiliev confirmed that Oppenheimer never was involved in espionage for the Soviet Union, though Soviet intelligence tried repeatedly to recruit him. Further, he had several persons removed from the Manhattan Project who had sympathies to the Soviet Union.282 For their part, Jerrold and Leona Schecter conclude that based on The Merkulov Letter, Oppenheimer must have been only a "facilitator", not a spy in the strict sense (although he would fall under that legal category in the U.S.).283
On December 16, 2022, United States Secretary of Energy Jennifer Granholm vacated the 1954 revocation of Oppenheimer's security clearance.284 Her statement said, "In 1954, the Atomic Energy Commission revoked Dr. Oppenheimer's security clearance through a flawed process that violated the Commission's own regulations. As time has passed, more evidence has come to light of the bias and unfairness of the process that Dr. Oppenheimer was subjected to while the evidence of his loyalty and love of country have only been further affirmed."285286287 Granholm's decision has drawn criticism.288289290
Final years
Starting in 1954, Oppenheimer lived for several months of each year on the island of Saint John in the U.S. Virgin Islands. In 1957, he purchased a two-acre (0.8-hectare) tract of land on Gibney Beach, where he built a spartan home on the beach.291 He spent considerable time sailing with his daughter Toni and wife Kitty.292
Oppenheimer's first public appearance following the stripping of his security clearance was a lecture titled "Prospects in the Arts and Sciences" for the Columbia University Bicentennial radio show Man's Right to Knowledge, in which he outlined his philosophy and his thoughts on the role of science in the modern world.293294 He had been selected for the final episode of the lecture series two years prior to the security hearing, though the university remained adamant that he stay on even after the controversy.295
In February 1955, the president of the University of Washington, Henry Schmitz, abruptly canceled an invitation to Oppenheimer to deliver a series of lectures there. Schmitz's decision caused an uproar among the students; 1,200 of them signed a petition protesting the decision, and Schmitz was burned in effigy. While they marched in protest, the state of Washington outlawed the Communist Party, and required all government employees to swear a loyalty oath. Edwin Albrecht Uehling, the chairman of the physics department and a colleague of Oppenheimer's from Berkeley, appealed to the university senate, and Schmitz's decision was overturned by a vote of 56 to 40. Oppenheimer stopped briefly in Seattle to change planes on a trip to Oregon and was joined for coffee during his layover by several University of Washington faculty, but Oppenheimer never lectured there.296297 Oppenheimer gave two lectures on the "Constitution of Matter" at Oregon State University during this trip.298
Oppenheimer was increasingly concerned about the danger that scientific inventions could pose to humanity. He joined with Albert Einstein, Bertrand Russell, Joseph Rotblat, and other eminent scientists and academics to establish what would eventually, in 1960, become the World Academy of Art and Science. Significantly, after his public humiliation, he did not sign the major open protests against nuclear weapons of the 1950s, including the Russell–Einstein Manifesto of 1955, nor, though invited, did he attend the first Pugwash Conferences on Science and World Affairs in 1957.299
In his speeches and public writings, Oppenheimer continually stressed the difficulty of managing the power of knowledge in a world in which the freedom of science to exchange ideas was more and more hobbled by political concerns. Oppenheimer delivered the Reith Lectures on the BBC in 1953, which were subsequently published as Science and the Common Understanding.300
In 1955, Oppenheimer published The Open Mind, a collection of eight lectures that he had given since 1946 on the subject of nuclear weapons and popular culture.301 Oppenheimer rejected the idea of nuclear gunboat diplomacy. "The purposes of this country in the field of foreign policy", he wrote, "cannot in any real or enduring way be achieved by coercion."302
In 1957, the philosophy and psychology departments at Harvard invited Oppenheimer to deliver the William James Lectures. An influential group of Harvard alumni led by Edwin Ginn that included Archibald Roosevelt protested the decision.303 1,200 people attended Oppenheimer's six lectures, "The Hope of Order", in Sanders Theatre.304 In 1962, Oppenheimer delivered the Whidden Lectures at McMaster University, which were published in 1964 as The Flying Trapeze: Three Crises for Physicists.305
Deprived of political influence, Oppenheimer continued to lecture, write, and work on physics. He toured Europe and Japan, giving talks about the history of science, the role of science in society, and the nature of the universe.306 Oppenheimer was warmly received during his three-week lecture tour in Japan in 1960, just 15 years after the bombings of Hiroshima and Nagasaki.307 He indicated interest in seeing Hiroshima, but the Japan Committee for Intellectual Interchange, which sponsored the tour, decided it would be best not to stop at Hiroshima or Nagasaki, and Oppenheimer never went to either city.308 In 1963 he spoke about the importance of studying the history of science at the dedication of the Niels Bohr Library and Archives of the American Institute of Physics.309310
Oppenheimer continued to visit academic institutions throughout his final years. He remained a controversial figure to students, faculty, and communities. In November 1955, Oppenheimer became the inaugural week-long visiting fellow at the Phillips Exeter Academy in Exeter, New Hampshire.311
In September 1957, France made Oppenheimer an Officer of the Legion of Honor,312 and on May 3, 1962, he was elected a Foreign Member of the Royal Society in Britain.313314
Enrico Fermi Award
In 1959, then-Senator John F. Kennedy voted to deny Lewis Strauss, Oppenheimer's greatest detractor in his security hearings, confirmation as Secretary of Commerce, effectively ending Strauss's political career. In 1962, Kennedy―now President of the United States―invited Oppenheimer to a ceremony honoring 49 Nobel Prize winners. At the event, AEC chairman Glenn Seaborg asked Oppenheimer whether he wanted another security hearing. Oppenheimer declined.315
In March 1963, the General Advisory committee of the AEC selected Oppenheimer to receive its Enrico Fermi Award, an award Congress had created in 1954.316 Kennedy was assassinated before he could present the award to Oppenheimer, but his successor, Lyndon Johnson, did so in a December 1963 ceremony at which he cited Oppenheimer's "contributions to theoretical physics as a teacher and originator of ideas, [and] leadership of the Los Alamos Laboratory and the atomic energy program during critical years."317 He called the signing of the award one of Kennedy's greatest acts as president.318 Oppenheimer told Johnson, "I think it is just possible, Mr. President, that it has taken some charity and some courage for you to make this award today."319320
Kennedy's widow, Jackie, made a point of attending the ceremony so she could tell Oppenheimer how much her husband had wanted him to have the medal.321 Also present were Teller, who had recommended Oppenheimer receive the award in hopes that it would heal the rift between them,322 and Henry D. Smyth, who in 1954 had been the lone dissenter from the AEC's 4–1 decision to define Oppenheimer as a security risk.
But congressional hostility to Oppenheimer lingered. Senator Bourke B. Hickenlooper formally protested Oppenheimer's selection just eight days after Kennedy was killed,323 and several Republican members of the House AEC Committee boycotted the ceremony.324
The rehabilitation represented by the award was symbolic, as Oppenheimer still lacked a security clearance and could have no effect on official policy, but the award came with a $50,000 tax-free stipend.325
Death
In late 1965, Oppenheimer was diagnosed with throat cancer, likely caused by chain smoking cigarettes for much of his life.326 After inconclusive surgery, he underwent unsuccessful radiation treatment and chemotherapy late in 1966. On February 18, 1967, he died in his sleep at his home in Princeton, aged 62 years.327 A memorial service was held a week later at Alexander Hall on the campus of Princeton University.328 The service was attended by 600 of his scientific, political, and military associates, including Bethe, Groves, Kennan, Lilienthal, Rabi, Smyth, and Wigner. His brother Frank and the rest of his family were there, as was the historian Arthur M. Schlesinger Jr., the novelist John O'Hara, and George Balanchine, the director of the New York City Ballet. Bethe, Kennan and Smyth gave brief eulogies.329 Oppenheimer's body was cremated and his ashes placed in an urn, which Kitty dropped into the sea within sight of the Saint John beach house.330
In October 1972, Kitty died from an intestinal infection complicated by a pulmonary embolism. She was 62.331 Oppenheimer's ranch in New Mexico was then inherited by their son Peter, and the beach property was inherited by their daughter Katherine "Toni" Oppenheimer Silber. Toni's two marriages ended in divorce. She obtained a temporary position as a translator at the United Nations in 1969, but the position required an FBI security clearance, which never came through due to the old charges against her father. She moved to the family beach house on Saint John and committed suicide by hanging there in 1977.332333334 She left the property to "the people of Saint John."335 The house was built too close to the coast and was destroyed by a hurricane. As of 2007, the Virgin Islands Government maintained a Community Center nearby.336
Legacy
When Oppenheimer was stripped of his political influence in 1954, he symbolized for many the folly of scientists who believed they could control the use of their research, and the dilemmas of moral responsibility presented by science in the nuclear age.337 The hearings were motivated by politics and personal enmities, and reflected a stark divide in the nuclear weapons community.338 One group passionately feared the Soviet Union as a mortal enemy, and believed having the most powerful weaponry capable of providing the most massive retaliation was the best strategy to combat that threat. The other group thought developing the H-bomb would not improve Western security and that using the weapon against large civilian populations would be genocide; they advocated instead a more flexible response to the Soviets involving tactical nuclear weapons, strengthened conventional forces, and arms control agreements. The first of these groups was the more powerful in political terms, and Oppenheimer became its target.339340
Rather than consistently oppose the "Red-baiting" of the late 1940s and early 1950s, Oppenheimer testified against former colleagues and students, before and during his hearing. In one incident, his damning testimony against former student Bernard Peters was selectively leaked to the press. Historians have interpreted this as an attempt by Oppenheimer to please his colleagues in the government and perhaps to divert attention from his own previous left-wing ties and those of his brother. In the end, it became a liability when it became clear Oppenheimer had really doubted Peters's loyalty, and recommending him for the Manhattan Project was reckless, or at least contradictory.341
Popular depictions of Oppenheimer view his security struggles as a confrontation between right-wing militarists (represented by Teller) and left-wing intellectuals (represented by Oppenheimer) over the moral question of weapons of mass destruction.342 Biographers and historians have often viewed Oppenheimer's story as a tragedy.343344345 National security advisor and academic McGeorge Bundy, who worked with Oppenheimer on the State Department Panel of Consultants, wrote: "Quite aside from Oppenheimer's extraordinary rise and fall in prestige and power, his character has fully tragic dimensions in its combination of charm and arrogance, intelligence and blindness, awareness and insensitivity, and perhaps above all daring and fatalism. All these, in different ways, were turned against him in the hearings."346
The question of scientists' responsibility toward humanity inspired Bertolt Brecht's drama Life of Galileo (1955), left its imprint on Friedrich Dürrenmatt's The Physicists, and is the basis of John Adams's 2005 opera Doctor Atomic, which was commissioned to portray Oppenheimer as a modern-day Faust. Heinar Kipphardt's play In the Matter of J. Robert Oppenheimer, after appearing on West German television, had its theatrical release in Berlin and Munich in October 1964. The 1967 Finnish television film Oppenheimerin tapaus (The Case of Oppenheimer) is based on the same play and produced by the Yleisradio company.347348 Oppenheimer's objections resulted in an exchange of correspondence with Kipphardt, in which Kipphardt offered to make corrections but defended the play.349 It premiered in New York in 1968, with Joseph Wiseman as Oppenheimer. New York Times theater critic Clive Barnes called it an "angry play and a partisan play" that sided with Oppenheimer but portrayed him as a "tragic fool and genius."350 Oppenheimer had difficulty with this portrayal. After reading a transcript of Kipphardt's play soon after it began to be performed, Oppenheimer threatened to sue Kipphardt, decrying "improvisations which were contrary to history and to the nature of the people involved."351 Later Oppenheimer told an interviewer:
The whole damn thing [his security hearing] was a farce, and these people are trying to make a tragedy out of it. ... I had never said that I had regretted participating in a responsible way in the making of the bomb. I said that perhaps he [Kipphardt] had forgotten Guernica, Coventry, Hamburg, Dresden, Dachau, Warsaw, and Tokyo; but I had not, and that if he found it so difficult to understand, he should write a play about something else.352
Oppenheimer is the subject of many biographies, including American Prometheus (2005) by Kai Bird and Martin J. Sherwin, which won the 2006 Pulitzer Prize for Biography or Autobiography.353 The 1980 BBC TV serial Oppenheimer, starring Sam Waterston, won three BAFTA Television Awards.354 The Day After Trinity, a 1980 documentary about Oppenheimer and the atomic bomb, was nominated for an Academy Award and received a Peabody Award.355356 Oppenheimer's life is explored in Tom Morton-Smith's 2015 play Oppenheimer,357 and the 1989 film Fat Man and Little Boy, where he was portrayed by Dwight Schultz.358 Also in 1989, David Strathairn played Oppenheimer in the TV film Day One.359 In the 2023 American film Oppenheimer, directed by Christopher Nolan and based on American Prometheus, Oppenheimer is portrayed by Cillian Murphy.360 The film won the Academy Award for best picture, and Murphy won for best actor.361
A centennial conference about Oppenheimer's legacy was held in 2004 at the University of California, Berkeley, alongside a digital exhibition on his life,362 with the conference proceedings published in 2005 as Reappraising Oppenheimer: Centennial Studies and Reflections.363 His papers are in the Library of Congress.364
As a scientist, Oppenheimer was remembered by his students and colleagues as a brilliant researcher and engaging teacher who founded modern theoretical physics in the United States. "More than any other man", Bethe wrote, "he was responsible for raising American theoretical physics from a provincial adjunct of Europe to world leadership."365 Because his scientific attentions often changed rapidly, he never worked long enough on any one topic and carried it to fruition to merit the Nobel Prize,366 though his investigations contributing to the theory of black holes might have warranted the prize had he lived long enough to see them brought to fruition by later astrophysicists.367 An asteroid, 67085 Oppenheimer, was named in his honor on January 4, 2000,368 as was the lunar crater Oppenheimer in 1970.369
As a military and public policy advisor, Oppenheimer was a leader in the shift toward technocracy in the interactions between science and the military, and in the emergence of "big science". During World War II, scientists became involved in military research to an unprecedented degree. Because of the threat fascism posed to Western civilization, they volunteered in great numbers for technological, and organizational, assistance to the Allied effort, resulting in powerful tools such as radar, the proximity fuze and operations research. As a cultured, intellectual, theoretical physicist who became a disciplined military organizer, Oppenheimer represented the shift away from the idea that scientists had their "heads in the clouds" and that knowledge of esoteric subjects like the composition of the atomic nucleus had no "real-world" applications.370
Two days before the Trinity test, Oppenheimer expressed his hopes and fears in a quotation from Bhartṛhari's Śatakatraya:
In battle, in the forest, at the precipice in the mountains, On the dark great sea, in the midst of javelins and arrows, In sleep, in confusion, in the depths of shame, The good deeds a man has done before defend him.371372
Publications
- Oppenheimer, J. Robert (1954). Science and the Common Understanding. New York: Simon and Schuster. OCLC 34304713.
- Oppenheimer, J. Robert (1955). The Open Mind. New York: Simon and Schuster. OCLC 297109.
- Oppenheimer, J. Robert (1964). The Flying Trapeze: Three Crises for Physicists. London: Oxford University Press. OCLC 592102.
- Oppenheimer, J. Robert; Rabi, I.I (1969). Oppenheimer. New York: Scribner. OCLC 2729. (posthumous)
- Oppenheimer, J. Robert; Smith, Alice Kimball; Weiner, Charles (1980). Robert Oppenheimer, Letters and Recollections. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-674-77605-0. OCLC 5946652. (posthumous)
- Oppenheimer, J. Robert; Metropolis, N.; Rota, Gian-Carlo; Sharp, D. H. (1984). Uncommon Sense. Cambridge, Massachusetts: Birkhäuser Boston. ISBN 978-0-8176-3165-9. OCLC 10458715. (posthumous)
- Oppenheimer, J. Robert (1989). Atom and Void: Essays on Science and Community. Princeton, New Jersey: Princeton University Press. ISBN 978-0-691-08547-0. OCLC 19981106. (posthumous)
Notes
Sources
Books
- Anderson, Leif E.; Whitaker, Ewen A. (1982). NASA Catalogue of Lunar Nomenclature (PDF). Springfield, Virginia: National Aeronautics and Space Administration. Archived (PDF) from the original on August 15, 2023. Retrieved August 15, 2023.
- Bethe, Hans (1968b). The Road from Los Alamos. New York: Springer Science+Business Media. ISBN 978-0-88318-707-4.
- Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8.
- Bundy, McGeorge (1988). Danger and Survival: Choices About the Bomb in the First Fifty Years. New York: Random House. ISBN 978-0-394-52278-4.
- Carson, Cathryn (2005). "§Introduction". In Carson, Cathryn; Hollinger, David A. (eds.). Reappraising Oppenheimer: Centennial Studies and Reflections. Berkeley, California: Office for History of Science and Technology, University of California. pp. 1–10. ISBN 978-0-9672617-3-7.
- Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8.
- Childs, Herbert (1968). An American Genius: The Life of Ernest Orlando Lawrence, Father of the Cyclotron. New York City: E. P. Dutton. ISBN 978-0-525-05443-6.
- Conant, Jennet (2005). 109 East Palace: Robert Oppenheimer and the Secret City of Los Alamos. New York: Simon & Schuster. ISBN 978-0-7432-5007-8.
- Feldman, Burton (2000). The Nobel Prize: A History of Genius, Controversy, and Prestige. New York: Arcade Publishing. ISBN 978-1-55970-537-0.
- Groves, Leslie (1962). Now it Can be Told: The Story of the Manhattan Project. New York: Harper & Brothers. ISBN 978-0-306-70738-4. {{cite book}}: ISBN / Date incompatibility (help)
- Haynes, John Earl (2006). Early Cold War Spies: The Espionage Trials that Shaped American Politics. Cambridge, Massachusetts: Cambridge University Press. ISBN 978-0-521-67407-2.
- Haynes, John Earl; Klehr, Harvey; Vassiliev, Alexander (2009). Spies: The Rise and Fall of the KGB in America. New Haven, Connecticut: Yale University Press. ISBN 978-0-300-12390-6.
- Herken, Gregg (2002). Brotherhood of the Bomb: The Tangled Lives and Loyalties of Robert Oppenheimer, Ernest Lawrence, and Edward Teller. New York: Henry Holt and Company. ISBN 978-0-8050-6588-6.
- Hewlett, Richard G.; Anderson, Oscar E. (1962). The New World, 1939–1946. A History of the United States Atomic Energy Commission. Vol. I. University Park, Pennsylvania: Pennsylvania State University Press. ISBN 978-0-520-07186-5. {{cite book}}: ISBN / Date incompatibility (help)
- Hewlett, Richard G.; Duncan, Francis (1969). Atomic Shield, 1947–1952. A History of the United States Atomic Energy Commission. Vol. II. University Park, Pennsylvania: Pennsylvania State University Press. ISBN 978-0-520-07187-2.
- Hewlett, Richard G.; Holl, Jack M. (1989). Atoms for Peace and War, 1953–1961: Eisenhower and the Atomic Energy Commission (PDF). A History of the United States Atomic Energy Commission. Berkeley, California: University of California Press. ISBN 978-0-520-06018-0. Archived (PDF) from the original on September 23, 2020. Retrieved July 19, 2020.
- Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2.
- Hollinger, David A. (2005). "§Afterward". In Carson, Cathryn; Hollinger, David A. (eds.). Reappraising Oppenheimer: Centennial Studies and Reflections. Berkeley, California: Office for History of Science and Technology, Univ. of California. pp. 385–390. ISBN 978-0-9672617-3-7.
- Hufbauer, Karl (2005). "J. Robert Oppenheimer's Path to Black Holes". In Carson, Cathryn; Hollinger, David A. (eds.). Reappraising Oppenheimer: Centennial Studies and Reflections. Berkeley, California: Office for History of Science and Technology, Univ. of California. pp. 31–47. ISBN 978-0-9672617-3-7.
- Hunner, John (2012). J. Robert Oppenheimer, the Cold War, and the Atomic West. Norman, Oklahoma: University of Oklahoma Press. ISBN 978-0-8061-6308-6.
- Jones, Vincent (1985). Manhattan: The Army and the Atomic Bomb. Washington, D.C.: United States Army Center of Military History.
- Jungk, Robert (1958). Brighter than a Thousand Suns: A Personal History of the Atomic Scientists. New York: Harcourt Brace. ISBN 978-0-15-614150-5. {{cite book}}: ISBN / Date incompatibility (help)
- Kelly, Cynthia C. (2006). Oppenheimer and the Manhattan Project: Insights into J. Robert Oppenheimer, "Father of the Atomic Bomb". Hackensack, New Jersey: World Scientific. ISBN 978-981-256-418-4.
- McMillan, Priscilla Johnson (2005). The Ruin of J. Robert Oppenheimer and the Birth of the Modern Arms Race. New York: Viking. ISBN 978-0-670-03422-2.
- Monk, Ray (2012). Robert Oppenheimer: A Life Inside the Center. New York; Toronto: Doubleday. ISBN 978-0-385-50407-2.
- Nichols, Kenneth (1987). The Road to Trinity: A Personal Account of How America's Nuclear Policies Were Made. New York: William Morrow and Company. ISBN 978-0688069100.
- Norris, Robert S. (2002). Racing for the Bomb: General Leslie R. Groves, the Manhattan Project's Indispensable Man. South Royalton, Vermont: Steerforth Press. ISBN 1-58642-039-9.
- Pais, Abraham (2006). J. Robert Oppenheimer: A Life. Oxford: Oxford University Press. ISBN 978-0-19-516673-6.
- Polenberg, Richard (2002). In the Matter of J. Robert Oppenheimer: The Security Clearance Hearing. Ithaca, New York: Cornell University. ISBN 978-0-8014-3783-0.
- Polenberg, Richard (2005). "The Fortunate Fox". In Carson, Cathryn; Hollinger, David A. (eds.). Reappraising Oppenheimer: Centennial Studies and Reflections. Berkeley, California: Office for History of Science and Technology, Univ. of California. pp. 267–272. ISBN 978-0-9672617-3-7.
- Rhodes, Richard (1986). The Making of the Atomic Bomb. New York: Simon & Schuster. ISBN 978-0-671-44133-3.
- Rhodes, Richard (1995). Dark Sun: The Making of the Hydrogen Bomb. New York: Simon & Schuster. ISBN 978-0-684-82414-7.
- Roy, Kaustuv (2018). Rethinking Curriculum in Times of Shifting Educational Context. Palgrave Macmillan. doi:10.1007/978-3-319-61106-8. ISBN 978-3-319-61105-1.
- Schweber, Silvan S. (2008). Einstein and Oppenheimer: the Meaning of Genius. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-674-02828-9.
- Smith, Alice Kimball; Weiner, Charles (1980). Robert Oppenheimer: Letters and Recollections. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-8047-2620-7.
- Spangenburg, Ray; Moser, Diane (2004). Science Frontiers, 1946 to the Present. New York: Facts On File. ISBN 978-0-816-06880-7.
- Stern, Philip M. (1969). The Oppenheimer Case: Security on Trial. New York: Harper & Row.
- Streshinsky, Shirley; Klaus, Patricia (2013). An Atomic Love Story: The Extraordinary Women in Robert Oppenheimer's Life. New York: Turner Publishing. ISBN 978-1-61858-019-1.
- Strout, Cushing (1963). Conscience, Science and Security: The Case of Dr. J. Robert Oppenheimer. Chicago: Rand McNally.
- Szasz, Ferenc M. (1984). The Day the Sun Rose Twice. Albuquerque, New Mexico: University of New Mexico Press. ISBN 978-0-8263-0767-5.
- United States Atomic Energy Commission (1954). In the Matter of Dr. J. Robert Oppenheimer. Washington, D.C.: United States Government Printing Office.
- Wolverton, Mark (2008). A Life in Twilight: The Final Years of J. Robert Oppenheimer. New York: St. Martin's Press. ISBN 978-0-312-37440-2.
- Wortham, Biscoe Hale (1886). The Śatakas of Bhartr̥ihari. Trübner's Oriental series. London: Trübner.
- Young, Ken; Schilling, Warner R. (2019). Super Bomb: Organizational Conflict and the Development of the Hydrogen Bomb. Ithaca, New York: Cornell University Press. ISBN 978-1-5017-4516-4.
Articles
- Boyce, Niall (February 14, 2015). "Man of steel". The Lancet. 385 (9968): 577–662. doi:10.1016/S0140-6736(15)60221-5. S2CID 54252502. Archived from the original on March 27, 2023. Retrieved July 15, 2023.
- Hijiya, James A. (June 2000). "The Gita of Robert Oppenheimer" (PDF). Proceedings of the American Philosophical Society. 144 (2). ISSN 0003-049X. Archived from the original (PDF) on November 26, 2013. Retrieved December 23, 2013.
- Rhodes, Richard (October 1977). "'I Am Become Death ... ': The Agony of J. Robert Oppenheimer". American Heritage. Archived from the original on June 12, 2008. Retrieved May 23, 2008.
- Sanders, Jane A. (1979). "The University of Washington and the Controversy over J. Robert Oppenheimer". The Pacific Northwest Quarterly. 70 (1): 8–19. ISSN 0030-8803. JSTOR 40489791.
- Schweber, Silvan S. (2006). "Einstein and Oppenheimer: Interactions and Intersections". Science in Context. 19 (4). United Kingdom: Cambridge University Press: 513–559. doi:10.1017/S0269889706001050. S2CID 145807656.
- Scott, Terry; Besmann, Theodore M.; Goldberg, Stanley; Hawkins, David (1994). "Letters". Bulletin of the Atomic Scientists. 50 (5): 3–60. Bibcode:1994BuAtS..50e...3S. doi:10.1080/00963402.1994.11456544. ISSN 0096-3402.
- Hart, Curtis W. (2008). "J. Robert Oppenheimer: A Faith Development Portrait". Journal of Religion and Health. 47 (1): 118–128. doi:10.1007/s10943-007-9136-z. PMID 19105006. S2CID 21379766.
Further reading
Articles
- Bernstein, Barton J. (1988). "Four Physicists and the Bomb: The Early Years, 1945–1950". Historical Studies in the Physical and Biological Sciences. 18 (2): 231–263. doi:10.2307/27757603. ISSN 1939-1811. JSTOR 27757603.
- Borgwardt, Elizabeth (2008). "Site-specific: The Fractured Humanity of J. Robert Oppenheimer". Modern Intellectual History. 5 (3): 547–571. doi:10.1017/S1479244308001790. ISSN 1479-2443. S2CID 154948158.
- Galison, Peter; Bernstein, Barton J. (1989). "In Any Light: Scientists and the Decision to Build the Superbomb, 1952–1954". Historical Studies in the Physical and Biological Sciences. 19 (2): 267–347. doi:10.2307/27757627. ISSN 1939-1811. JSTOR 27757627.
- Walker, J. Samuel (2005). "Recent Literature on Truman's Atomic Bomb Decision: A Search for Middle Ground". Diplomatic History. 29 (2): 311–334. doi:10.1111/j.1467-7709.2005.00476.x. ISSN 0145-2096.
Books
- Chevalier, Haakon (1965). Oppenheimer: The Story of a Friendship. New York: Braziller. OCLC 1233721.
- Conant, Jennet (2006). 109 East Palace: Robert Oppenheimer and the Secret City of Los Alamos. Simon & Schuster. ISBN 978-0-7432-5007-8. OCLC 57475908.
- Davis, Nuel Pharr (1986). Lawrence and Oppenheimer. New York: Simon & Schuster. ISBN 978-0-306-80280-5. OCLC 13560672.
- Goodchild, Peter (1980). J. Robert Oppenheimer: Shatterer of Worlds. Boston: Houghton Mifflin. ISBN 978-0-395-30530-0.
- Kunetka, James (2015). The General and the Genius: Groves and Oppenheimer — the Unlikely Partnership That Built the Atom Bomb. Washington, D.C.: Regnery History. ISBN 978-1-62157-338-8. OCLC 891618851.
- York, Herbert F. (1976). The Advisors: Oppenheimer, Teller, and the Superbomb. Stanford, California: Stanford University Press. ISBN 978-0-8047-1714-4. OCLC 20721862.
External links
- Biography and online exhibit at the University of California, Berkeley
- J. Robert Oppenheimer – Berkeley Historical Plaque Project
- J. Robert Oppenheimer at the Atomic Heritage Foundation
- J. Robert Oppenheimer: An Unparalleled Legacy at the Los Alamos National Laboratory
- FBI files: J. Robert Oppenheimer at the Federal Bureau of Investigation
- The Reith Lectures: Robert Oppenheimer – Science and the Common Understanding, on BBC Radio 4, 1953
- Lecture by Dr. Robert Oppenheimer: Freedom and Necessity in the Sciences at Dartmouth College, 1959
- Lecture by Dr. Oppenheimer at the University of Michigan, 1962
- J. Robert Oppenheimer at IMDb
References
Oppenheimer's birth certificate reads "Julius Robert Oppenheimer,"[1][2] and his college transcript "J Robert Oppenheimer."[3] Oppenheimer himself said the J stood for nothing, and his brother Frank "surmised that the J was symbolic, a gesture in the direction of naming the eldest son after the father but at the same time a signal that his parents did not want Robert to be a 'junior.'"[4] ↩
Schweber 2008, p. 283 - Schweber, Silvan S. (2008). Einstein and Oppenheimer: the Meaning of Genius. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-674-02828-9. https://archive.org/details/einsteinoppenhei00schw ↩
Cassidy 2005, pp. 5–11 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 16, 145, 282 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Bird & Sherwin 2005, p. 10 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Cassidy 2005, pp. 5–11 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Bird & Sherwin 2005, p. 12 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Cassidy 2005, p. 35 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 23, 29 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 16–17 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, p. 35 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 43–46 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 61–63 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 75–76, 88–89 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 90–92 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, p. 94 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Monk 2012, p. 92. - Monk, Ray (2012). Robert Oppenheimer: A Life Inside the Center. New York; Toronto: Doubleday. ISBN 978-0-385-50407-2. https://archive.org/details/robertoppenheime0000monk ↩
Bird & Sherwin 2005, p. 46. - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Monk 2012, p. 97. - Monk, Ray (2012). Robert Oppenheimer: A Life Inside the Center. New York; Toronto: Doubleday. ISBN 978-0-385-50407-2. https://archive.org/details/robertoppenheime0000monk ↩
McCluskey, Megan (July 25, 2023). "J. Robert Oppenheimer's Grandson on What the Movie Gets Right and the One Scene He Would Have Changed". Time. Archived from the original on July 27, 2023. Retrieved July 26, 2023. https://time.com/6297743/oppenheimer-grandson-movie-interview/ ↩
"Oppenheimer and the poisoned apple". Cambridge University Library Special Collections. August 15, 2023. Archived from the original on December 9, 2023. Retrieved December 9, 2023. https://specialcollections-blog.lib.cam.ac.uk/?p=26027 ↩
Bird & Sherwin 2005, pp. 39–40, 96, 258 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Smith & Weiner 1980, p. 91 - Smith, Alice Kimball; Weiner, Charles (1980). Robert Oppenheimer: Letters and Recollections. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-8047-2620-7. https://archive.org/details/robertoppenheime00oppe ↩
Bird & Sherwin 2005, pp. 35–36, 43–47, 51–52, 320, 353 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Smith & Weiner 1980, p. 135 - Smith, Alice Kimball; Weiner, Charles (1980). Robert Oppenheimer: Letters and Recollections. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-8047-2620-7. https://archive.org/details/robertoppenheime00oppe ↩
Cassidy 2005, p. 108 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Bird & Sherwin 2005, p. 60 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Oppenheimer, Julius Robert (1927). Zur Quantentheorie kontinuierlicher Spektren (PhD thesis). OCLC 71902137. /wiki/OCLC_(identifier) ↩
Cassidy 2005, p. 109 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
"The Eternal Apprentice". Time. November 8, 1948. Archived from the original on October 7, 2013. Retrieved May 23, 2008. http://content.time.com/time/magazine/article/0,9171,853367,00.html ↩
Cassidy 2005, p. 112 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 115–116 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, p. 142 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Cassidy 2005, pp. 151–152 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
Bird & Sherwin 2005, pp. 73–74 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Bird & Sherwin 2005, p. 84 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Bird & Sherwin 2005, pp. 75–76 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Cassidy 2005, pp. 151–152 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
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Oppenheimer, J.R. (1930). "On the Theory of Electrons and Protons" (PDF). Physical Review (Submitted manuscript). 35 (1): 562–563. Bibcode:1930PhRv...35..562O. doi:10.1103/PhysRev.35.562. Archived (PDF) from the original on July 24, 2018. Retrieved November 5, 2018. https://authors.library.caltech.edu/1547/1/OPPpr30a.pdf ↩
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Oppenheimer, J.R. (1928). "On the Quantum Theory of the Autoelectric Field Currents". Proceedings of the National Academy of Sciences. 14 (5): 363–365. Bibcode:1928PNAS...14..363O. doi:10.1073/pnas.14.5.363. ISSN 0027-8424. PMC 1085522. PMID 16577110. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1085522 ↩
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Oppenheimer already had three PhD students who had commenced under another supervisor: Harvey Hall and J. Franklin Carlson under William Howell Williams; and Leo Nedelsky, who had started under Samuel K. Allison. In 1931, Hall became the first of Oppenheimer's students to complete his PhD.[54] /wiki/Samuel_K._Allison ↩
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Oppenheimer's other doctoral students: Arnold Nordsieck, Glen Camp, Willis Lamb, Samuel Batdorf, Sydney Dancroft, George Volkoff, Philip Morrison, Hartland Snyder, Joseph Keller, Robert Christy, Eugene Cooper, Shichi Kusaka, Richard Dempster, Roy Thomas, Eldred Nelson, Bernard Peters, Edward Gerjuoy, Stanley Frankel, Chaim Richman, Joseph Weinberg, David Bohm, Leslie Foldy, Harold Lewis and Siegfried Wouthuysen.[56] /wiki/Arnold_Nordsieck ↩
Dirac, P. A. M. (1928). "The quantum theory of the electron". Proceedings of the Royal Society of London. Series A. 117 (778): 610–624. Bibcode:1928RSPSA.117..610D. doi:10.1098/rspa.1928.0023. ISSN 1364-5021. JSTOR 94981. /wiki/Paul_Dirac ↩
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Oppenheimer, J.R.; Serber, Robert (1938). "On the Stability of Stellar Neutron Cores". Physical Review. 54 (7): 540. Bibcode:1938PhRv...54..540O. doi:10.1103/PhysRev.54.540. /wiki/Robert_Serber ↩
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Oppenheimer, J.R.; Snyder, H. (1939). "On Continued Gravitational Contraction". Physical Review. 56 (5): 455–459. Bibcode:1939PhRv...56..455O. doi:10.1103/PhysRev.56.455. /wiki/Hartland_Snyder ↩
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Hoddeson et al. 1993, pp. 57–58. - Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2. https://archive.org/details/criticalassembly0000unse ↩
Norris 2002, p. 244. - Norris, Robert S. (2002). Racing for the Bomb: General Leslie R. Groves, the Manhattan Project's Indispensable Man. South Royalton, Vermont: Steerforth Press. ISBN 1-58642-039-9. https://archive.org/details/racingforbombgen00norr ↩
Groves 1962, pp. 61–63. - Groves, Leslie (1962). Now it Can be Told: The Story of the Manhattan Project. New York: Harper & Brothers. ISBN 978-0-306-70738-4. https://archive.org/details/nowitcanbetolds00grov ↩
Norris 2002, p. 242. - Norris, Robert S. (2002). Racing for the Bomb: General Leslie R. Groves, the Manhattan Project's Indispensable Man. South Royalton, Vermont: Steerforth Press. ISBN 1-58642-039-9. https://archive.org/details/racingforbombgen00norr ↩
Norris 2002, p. 242. - Norris, Robert S. (2002). Racing for the Bomb: General Leslie R. Groves, the Manhattan Project's Indispensable Man. South Royalton, Vermont: Steerforth Press. ISBN 1-58642-039-9. https://archive.org/details/racingforbombgen00norr ↩
Groves 1962, p. 63 - Groves, Leslie (1962). Now it Can be Told: The Story of the Manhattan Project. New York: Harper & Brothers. ISBN 978-0-306-70738-4. https://archive.org/details/nowitcanbetolds00grov ↩
Bird & Sherwin 2005, pp. 185–187. - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Groves 1962, pp. 66–67. - Groves, Leslie (1962). Now it Can be Told: The Story of the Manhattan Project. New York: Harper & Brothers. ISBN 978-0-306-70738-4. https://archive.org/details/nowitcanbetolds00grov ↩
Smith & Weiner 1980, p. 227. - Smith, Alice Kimball; Weiner, Charles (1980). Robert Oppenheimer: Letters and Recollections. Cambridge, Massachusetts: Harvard University Press. ISBN 978-0-8047-2620-7. https://archive.org/details/robertoppenheime00oppe ↩
Bird & Sherwin 2005, p. 210 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Hewlett & Anderson 1962, pp. 230–232 - Hewlett, Richard G.; Anderson, Oscar E. (1962). The New World, 1939–1946. A History of the United States Atomic Energy Commission. Vol. I. University Park, Pennsylvania: Pennsylvania State University Press. ISBN 978-0-520-07186-5. https://archive.org/details/historyofuniteds0001unse_h9c4 ↩
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Bethe 1968a; reprinted as Bethe 1997, p. 190 - Bethe, H. A. (1968a). "J. Robert Oppenheimer. 1904–1967". Biographical Memoirs of Fellows of the Royal Society. 14: 390–416. doi:10.1098/rsbm.1968.0016. ISSN 0080-4606. https://doi.org/10.1098%2Frsbm.1968.0016 ↩
Bird & Sherwin 2005, pp. 221–222 - Bird, Kai; Sherwin, Martin J. (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer. New York: Alfred A. Knopf. ISBN 978-0-375-41202-8. https://archive.org/details/americanpromethe00bird/mode/2up ↩
Rhodes 1986, pp. 511–512. - Rhodes, Richard (1986). The Making of the Atomic Bomb. New York: Simon & Schuster. ISBN 978-0-671-44133-3. https://archive.org/details/makingofatomicbo00rhod ↩
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Hoddeson et al. 1993, pp. 226–229 - Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2. https://archive.org/details/criticalassembly0000unse ↩
Hewlett & Anderson 1962, pp. 312–313 - Hewlett, Richard G.; Anderson, Oscar E. (1962). The New World, 1939–1946. A History of the United States Atomic Energy Commission. Vol. I. University Park, Pennsylvania: Pennsylvania State University Press. ISBN 978-0-520-07186-5. https://archive.org/details/historyofuniteds0001unse_h9c4 ↩
Hoddeson et al. 1993, pp. 245–248 - Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2. https://archive.org/details/criticalassembly0000unse ↩
Hoddeson et al. 1993, pp. 248–249 - Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2. https://archive.org/details/criticalassembly0000unse ↩
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Hoddeson et al. 1993, p. 312 - Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN 978-0-521-44132-2. https://archive.org/details/criticalassembly0000unse ↩
Jones 1985, pp. 530–532 - Jones, Vincent (1985). Manhattan: The Army and the Atomic Bomb. Washington, D.C.: United States Army Center of Military History. https://archive.org/details/manhattanarmyato00jone ↩
Rhodes 1986, pp. 642–643 - Rhodes, Richard (1986). The Making of the Atomic Bomb. New York: Simon & Schuster. ISBN 978-0-671-44133-3. https://archive.org/details/makingofatomicbo00rhod ↩
Herken 2002, pp. 128–129. - Herken, Gregg (2002). Brotherhood of the Bomb: The Tangled Lives and Loyalties of Robert Oppenheimer, Ernest Lawrence, and Edward Teller. New York: Henry Holt and Company. ISBN 978-0-8050-6588-6. https://archive.org/details/brotherhoodofbom0000herk_e3u2 ↩
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Bernstein, Jeremy (April 26, 2018). "Letters : Bomb in the Head". London Review of Books. 40 (8). ISSN 0260-9592. Archived from the original on July 15, 2023. Retrieved January 10, 2022. https://www.lrb.co.uk/the-paper/v40/n08/letters ↩
Johnson, Mark (July 22, 2023). "How Oppenheimer weighed the odds of an atomic bomb test ending Earth". The Washington Post. Archived from the original on July 22, 2023. Retrieved July 22, 2023. https://www.washingtonpost.com/science/2023/07/22/oppenheimer-manhattan-project-history-atomic-bomb-test/ ↩
Barnett, Lincoln (October 10, 1949). "J. Robert Oppenheimer". Life. p. 133. Archived from the original on August 9, 2023. Retrieved July 31, 2023. https://books.google.com/books?id=GVIEAAAAMBAJ&dq=oppenheimer+%22if+the+radiance+of+a+thousand+suns+were+to+%22&pg=PA133 ↩
Oppenheimer, J.R. (1965). 'Now I am become death...' (video). Atomic Archive. Archived from the original on May 16, 2008. Retrieved November 19, 2021. https://www.atomicarchive.com/media/videos/oppenheimer.html ↩
"If the radiance ..." is Bhagavad Gita verse XI,12 (divi sūryasahasrasya bhavedyugapadutthitā / yadi bhāḥ sadṛṥī sā syādbhāsastasya mahātmanaḥ);[157][158] "Now I am become Death ..." is verse XI,32.(kālo'smi lokakṣayakṛtpravṛddho lokānsamāhartumiha pravṛttaḥ) Oppenheimer had read the Bhagavad Gita in the original Sanskrit, and the translation is his own.[159][160] In the literature, "shatterer" is usually given rather than "destroyer," because "shatterer" appears in the first printed rendition of Oppenheimer's anecdote (in Time magazine, November 8, 1948).[31] The "shatterer" version later appeared in Robert Jungk's Brighter than a Thousand Suns: A Personal History of the Atomic Scientists (1958),[161] which was based on an interview with Oppenheimer.[162] ↩
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Bella, Timothy (July 21, 2023). "The atomic bombings left Oppenheimer shattered: 'I have blood on my hands'". The Washington Post. Archived from the original on August 13, 2023. Retrieved August 18, 2023. https://www.washingtonpost.com/history/2023/07/21/oppenheimer-truman-atomic-bomb-guilt/ ↩
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Cassidy 2005, p. 253 - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
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Due to the subsequent development of the Standard Model, the muon is now considered to be a lepton and not a meson.[182] /wiki/Standard_Model ↩
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Quoted in Cassidy 2005, p. xvi - Cassidy, David C. (2005). J. Robert Oppenheimer and the American Century. New York: Pi Press. ISBN 978-0-13-147996-8. https://archive.org/details/jrobertoppenheim00cass_0 ↩
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See Wortham 1886, p. 15 for a different translation. - Wortham, Biscoe Hale (1886). The Śatakas of Bhartr̥ihari. Trübner's Oriental series. London: Trübner. https://archive.org/details/satakasofbhartri00bharuoft/page/n30/mode/1up ↩