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Astronomy

• April 26 – A meteorite shower falls on L'Aigle in Normandy; Jean Baptiste Biot demonstrates that it is of extraterrestrial origin.¹²³

Botany

• Publication (posthumously) of André Michaux's Flora Boreali-Americana in Paris, the first flora of North America.
• University of Tartu Botanical Gardens established.

Chemistry

• January 1 – William Henry's formulation of his law on the solubility of gases first published.⁴
• September 3 – English scientist John Dalton starts using symbols to represent the atoms of different chemical elements.
• October 21 – John Dalton's atomic theory and list of molecular weights first made known, at a lecture in Manchester.⁵⁶
• William Hyde Wollaston discovers the chemical element rhodium.
• Smithson Tennant discovers the chemical elements iridium and osmium.
• Cerium is discovered in Bastnäs (Sweden) by Jöns Jakob Berzelius and Wilhelm Hisinger, and independently in Germany by Martin Heinrich Klaproth.⁷
• Claude Louis Berthollet publishes Essai de statique chimique in Paris.

Exploration

• June 9 – Matthew Flinders completes the first known circumnavigation of Australia.⁸

Mathematics

• Gian Francesco Malfatti presents his conjecture regarding Malfatti circles.⁹¹⁰¹¹

Medicine

• Jean Marc Gaspard Itard first recognises pneumothorax.
• Dr Thomas Percival of Manchester publishes his Medical Ethics; or, a Code of Institutes and Precepts, Adapted to the Professional Conduct of Physicians and Surgeons, coining the expression medical ethics.¹²

Meteorology

• Luke Howard publishes the basis of the modern classification and nomenclature of clouds.¹³¹⁴

Technology

• Robert Ransome invents the self-sharpening chilled cast-iron ploughshare in Ipswich, England.
• The first Fourdrinier continuous papermaking machine is installed in Hertfordshire, England.

Transport

• January 4 – William Symington demonstrates his Charlotte Dundas, the "first practical steamboat", in Scotland.
• July 26 – The Surrey Iron Railway, a wagonway between Wandsworth and Croydon, is opened, being the first public railway line in England.
• Thomas Telford begins work on construction of the Caledonian Canal and improving roads in Scotland.¹⁵¹⁶

Awards

• Copley Medal: Richard Chenevix¹⁷

Births

• February 26 – Arnold Adolph Berthold, German physiologist (died 1861)
• February 28 – Christian Heinrich von Nagel, German geometer (died 1882)
• April 1 – Miles Joseph Berkeley, English cryptogamist (died 1889)
• May 12 – Justus von Liebig, German chemist (died 1873)
• May 24 – Charles Lucien Bonaparte, French naturalist (died 1857)
• June 8 – Amalia Assur, Swedish dentist (died 1889)
• July 31 – John Ericsson, Swedish-born mechanical engineer and inventor (died 1889)
• October 3 – John Gorrie, American physician and inventor (died 1855)
• October 6 – Heinrich Wilhelm Dove, Prussian physicist and climatologist (died 1879)
• October 16 – Robert Stephenson, English railway engineer (died 1859)
• November 29 – Christian Doppler, Austrian mathematician and discoverer of the Doppler effect (died 1853)
• December 21 – Joseph Whitworth, English mechanical engineer (died 1887)
• Choe Han-gi, Korean philosopher of science (died 1877)

Deaths

• May 8 – John Joseph Merlin, Liège-born English inventor (born 1735)
• October 14 – Ami Argand, Genevan physicist and chemist (born 1750)

References

1. "Ernst Florens Friedrich Chladni". Institute for Learning Technologies, Columbia University. Archived from the original on May 14, 2011. Retrieved May 8, 2011. https://web.archive.org/web/20110514140121/http://www.ilt.columbia.edu/projects/bluetelephone/html/chladni.html ↩

2. Oxford Dictionary of Scientists. Oxford University Press. 1999. p. 101. Bibcode:1999ods..book.....D. https://archive.org/details/dictionaryscient00dain ↩

3. Gounelle, M. (2003). "The meteorite fall at L'Aigle on April 26th 1803 and the Biot report" (PDF). Retrieved August 18, 2011. http://www.lpi.usra.edu/meetings/metsoc2003/pdf/5251.pdf ↩

4. Henry, William (January 1, 1803). "Experiments on the Quantity of Gases Absorbed by Water, at Different Temperatures, and under Different Pressures". Philosophical Transactions of the Royal Society. 93. London: 29–274. doi:10.1098/rstl.1803.0004. /wiki/File:William_Henry-Experiments_on_the_Quantity_of_Gases_Absorbed_by_Water.pdf ↩

5. Dalton, John (1805). "On the Absorption of Gases by Water and Other Liquids". Memoirs of the Literary and Philosophical Society of Manchester. 2nd Series. 1: 271–87. Archived from the original on June 11, 2011. Retrieved April 27, 2011. https://web.archive.org/web/20110611205519/http://web.lemoyne.edu/~giunta/dalton52.html ↩

6. Lappert, Michael F.; Murrell, John N. (2003). "John Dalton, the man and his legacy: the bicentenary of his Atomic Theory". Dalton Transactions (20): 3811–3820. doi:10.1039/B307622A. Retrieved February 17, 2008. http://www.rsc.org/delivery/_ArticleLinking/DisplayArticleForFree.cfm?doi=b307622a&JournalCode=DT ↩

7. "Cerium". Visual Elements. London: Royal Society of Chemistry. 1999–2005. Retrieved November 21, 2011. http://www.rsc.org/chemsoc/visualelements/pages/data/cerium_data.html ↩

8. "British History Timeline". BBC History. Retrieved February 17, 2008. https://www.bbc.co.uk/history/british/timeline/empireseapower_timeline_noflash.shtml ↩

9. Dörrie, H. (1965). "Malfatti's Problem". 100 Great Problems of Elementary Mathematics: their History and Solutions. New York: Dover. pp. 147–151. ISBN 0-486-61348-8. 0-486-61348-8 ↩

10. Goldberg, M. (1967). "On the Original Malfatti Problem". Mathematics Magazine. 40 (5): 241–247. doi:10.2307/2688277. JSTOR 2688277. /wiki/Mathematics_Magazine ↩

11. "Malfatti's Problem". cut-the-knot. Retrieved May 16, 2011. http://www.cut-the-knot.org/Curriculum/Geometry/Malfatti.shtml ↩

12. Davis, Michael (Fall 1999). "Writing a Code of Ethics" (PDF). Perspectives on the Professions. 19 (1). Chicago: Center for the Study of Ethics in the Professions at IIT: 1–3. Archived from the original (PDF) on February 25, 2021. Retrieved September 30, 2011. https://web.archive.org/web/20210225045509/http://ethics.iit.edu/perspective/v19n1%20perspective.pdf ↩

13. Howard, Luke (1803). "On the modifications of clouds, and on the principles of their production, suspension and destruction". Philosophical Magazine. 16 (62): 97–107, 344–57. doi:10.1080/14786440308676310. https://zenodo.org/record/1430688 ↩

14. Thornes, John E. (1999). John Constable's Skies. The University of Birmingham Press. ISBN 1-902459-02-4. 1-902459-02-4 ↩

15. Williams, Hywel (2005). Cassell's Chronology of World History. London: Weidenfeld & Nicolson. p. 354. ISBN 0-304-35730-8. 0-304-35730-8 ↩

16. Palmer, Alan; Palmer, Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 239–240. ISBN 0-7126-5616-2. 0-7126-5616-2 ↩

17. "Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved July 21, 2020. https://www.britannica.com/science/Copley-Medal ↩