Word: profs
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Dates: during 1920-1929
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...Prof. Maxwell, of Cambridge Univ.−Theory of electro-magnetic waves, realized experimentally...
...Prof. Hertz, of the Univ. of Bonn−Early wireless communication...
...Prof. Armstrong, of Columbia Univ.The "feedback circuit," last factor necessary to popular radio...
...Prof, and Mme. Curie, of the Univ. of Paris−Radio-activity, whence cancer cure...
...Prof. Moissan, of the Sorbonne−The electric furnace, foundation of electric metallurgical industries...