Branly, Édouard

Branly, Édouard

(ādwär` bräNlē`), French physicist and physician. He was professor of physics at the Catholic Institute, Paris, from 1875. He developed (1890) a coherer for the detection of electric waves which was used by MarconiMarconi, Guglielmo, Marchese
, 1874–1937, Italian physicist, celebrated for his development of wireless telegraphy (see radio). In the field of electromagnetic waves he correlated and improved inventions of H. R.
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 in his system of wireless telegraphy (see radioradio,
transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver.
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).