Becquerel
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Henri Becquerel (1852-1908) was a French physicist known for his research on the rotation of polarization planes in magnetic fields, phosphorescence under infrared rays, and his pioneering work on radioactivity through studies of uranium compounds.
Encyclopedia entry (1928–1936)
Becquerel, Henri (Henri Becquerel, 1852-1908), a noted French physicist, was a professor at the Polytechnic School in Paris and a member of the Institut de France and permanent secretary of the French Academy. B. studied the rotation of the plane of polarization of rays in a magnetic field, phosphorescence under the action of infrared rays. His research on uranium compounds gave the first impetus to work on the study of radioactivity. Also interesting are his studies of the magnetism of nickel and cobalt, the study of the so-called Zeeman effect (splitting of spectral lines when a ray passes through a magnetic field), determination of the temperature of the sun, etc.
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“Becquerel.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/becquerel/