Édouard Branly
Édouard Branly ( born October 23, 1844 in Amiens, † March 24, 1940 in Paris) was a French physicist and pioneer of radio technology, especially radio and wireless telegraphy.
Life
Édouard Branly studied various subjects at several institutions in France. Among other things, at the Lycée (College ) of Saint -Quentin, the Lycee Henri IV de Paris and the Faculté des Sciences de Paris. Thereafter, he was admitted to the École Normale Supérieure in Paris, to study the physics and was among other things a student of Louis Pasteur there. In 1867 he graduated as a scientist with teaching license for physics and mathematics. In 1868 he became a professor at the University of Bourges and 1875 professor at the Institut Catholique de Paris.
The physicist is regarded as one of the inventors of the coherer ( coherer ), an important component of a receiver of signals. Brandlys work of 1890 was an unprecedented success in the history of radio technology. Precursor had already been from 1884 to 1886 developed and written by the Italians Temistocle Calzecchi - Onesti, but received scant attention from the professional world outside Italy. For more information about Branlys role can be found in the article " invention of the radio ".
Until his death dealt Édouard Branly with many areas of former physics, in particular the areas of wireless communication and robot as well as in the field of medicine.
Writings
- Phénomènes électrostatiques dans les cellules voltaïques (Electrostatic Phenomena in Voltaic Cells ), 1873.
- Traité de physique élémentaire, 1899.
- Cours élémentaire de Physique et Problèmes de Physique, 1900.
- La TSF, telegraphy Téléphonie et sans fil, 1925.
- Electricité, 1934.