Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
John Arnold Cranston
open-in-new
<p> John Arnold Cranston <a href="/facts/FRSE/6T9ftn3H">FRSE</a> FRIC LLD (15 August 1891 – 25 April 1972) was a British research chemist. He is credited with the development of isotopes and also the co-discovery of <a href="/facts/Protactinium/v87VqTPf">protactinium</a> (element 91). However, this credit was claimed by others, not himself directly, and only caused controversy in the scientific world after the publishing of his obituary. </p>