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Chadwick was awarded an 1851 Exhibition Scholarship, and elected to study beta radiation under Hans Geiger. Using Geiger's recently developed Geiger counter, he was able to demonstrate that beta radiation produced a continuous electromagnetic spectrum, and not discrete lines as had been thought. Still in Germany when World War I broke out in Europe, he spent the war in the Ruhleben internment camp.
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Birthday
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Birthday
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Birthdate
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birthdate
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1896 he became an assistant at the University of Chicago, where he became a full professor in 1910. In 1909 Millikan began a series of experiments to determine the electric charge carried by a single electron.
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Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, and thus is credited with the discovery and identification of the electron.
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he discovered the concept of radioactive half-life, proved that radioactivity involved the transmutation of one chemical element to another, and also differentiated and named alpha and beta radiation.
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death
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death
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death
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death
