Hans Geiger (1882)
After receiving a doctorate in physics in Germany in 1906, Geiger traveled to England, where he assisted chemist Ernest Rutherford. In 1908, they designed an instrument to detect and count alpha particles, positively charged ionizing particles produced by radioactive decay. Two decades later, Geiger developed the sensitive, portable radiation counter that now bears his name. During World War II, he was a member of the Uranium Club, a group of German scientists who attempted to develop what? More…
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