René Barthélemy
René Barthélemy | |
---|---|
Born | March 10, 1889 |
Died | February 12, 1954 | (aged 64)
Nationality | French |
Occupation | Engineer |
Known for | Development of television |
René Barthélemy (10 March 1889 – 12 February 1954) was a French engineer and a pioneer in the development of television.
Background
The invention of television was a slow enterprise of collective improvement between researchers and do-it-yourselfers from different countries, the first concepts of which date back to the end of the 1870s.[1] It was the successive discoveries in electricity and optics that made it possible to formulate the theoretical projects, the first experiments and the first demonstrations.[2]
Biography
Barthélemy was the son of a tailor from
Television
By 1929 Barthélemy had been made head of the new television research laboratory, created by Jean Le Duc at the request of Ernest Chamon, CEO of the Compagnie des Compteurs in Montrouge.[4]
A demonstration of television had been carried out at the Olympia Cinema in November 1930 using
Continuing his work under the auspices of
From November 1935, the Eiffel Tower served as a transmitting antenna with a power of 10Kw. On 2 December 1935, continuing to perfect his devices, Barthélemy developed and produced an output of 180 lines of definition, but the time of "mechanical" disc television was over and advances in electronics were paving the way for modern television. At the beginning of 1937, programs were more frequent and took place every evening from 8:00 pm to 8:30 pm, broadcasting over a radius of 100 km.[6]
Television took off, but the number of sets was still very low (in France; a hundred in 1935, 3,000 in 1949, half a million in 1956). René Barthélemy's “EMYVISOR” cathode-ray tube receiver was marketed by EMYRADIO, around December 1935.
René Barthélemy, by then a member of the
Despite his recommendation to develop a broadcasting network at 1045 lines, it was the 819 standard achieved by Henri de France which was adopted by the Minister of Information François Mitterrand. Disappointed, Barthélemy decided to retire.[9]
Barthélémy died on 12 February 1954 at Antibes,[10] and is buried in the Fontenay-aux-Roses cemetery.
Publications
- Barthélemy, René (1946). Notice sur les travaux de R. Barthélemy: télévision, radioélectricité, appareils de mesure (in French). Fontenay-aux-Roses: Impr. de Bellenand. OCLC 458645373.
- Barthélemy, René; Académie des sciences (France) (1947). Commémoration du soixante-dixième anniversaire de l'invention du phonographe par Charles Cros : au Conservatoire national des arts et métiers, à Paris, le 19 décembre 1947 (in French). Paris: Palais de l'Institut. OCLC 491025916.
- Barthélemy, René (1947). Contribution à l'étude des analyseurs électroniques; l'iconoscope, l'isoscope (in French). Paris: L.E.P.S. OCLC 11168529.
- Barthélemy, René. Remise de l'épée à Monsieur René Barthélémy, membre de l'Académie des sciences : Au studio de la télévision, le 16 novembre 1946 (in French). Paris: Luys. OCLC 1032610407.
- Barthélemy, René; Académie des sciences (France) (1947). Commémoration du soixante-dixième anniversaire de l'invention du phonographe par Charles Cros, au Conservatoire national des arts et métiers, à Paris, le vendredi 19 décembre 1947 (in French). Paris: Palais de l'Institut. OCLC 458645368.
- Barthélemy, René (1947). Television (in French). Lille: s.n. OCLC 431404517.
- Barthélemy, René (1949). Notice sur la vie et l'oeuvre de Georges Charpy (1865–1945): déposée en la séance du 16 juin 1947 (in French). Paris: Gauthier-Villars. OCLC 494957300.
Honors
- Member of the Académie des sciences, on 18 March 1946
- Commander of the Légion d'honneur, on 12 February 1954
Bibliography
- Bibliography of writings by and about René Barthélemy relating to television (Site History of television)
- Caunes, Georges de (1997). René Barthélemy ou La grande aventure de la télévision française (in French). Saint-Martin-d'Hères (Isère): PUG. OCLC 490396276.
See also
References
- doi:10.1038/007303e0.
- OCLC 1294284907.
- OCLC 793135499.
- ^ Franck Ferrand, "The history of television", program At the heart of history on Europe 1, 8 October 2012.
- ^ "14 avril 1931 : La première démonstration publique de télévision en France | Histoire et analyse d'images et oeuvres". histoire-image.org (in French). Retrieved 14 April 2022.
- ^ OCLC 263406499.
- ^ April 14, 1931: the first public demonstration of television in France.
- ^ .ina.fr/blog/2010/10/28/la-tele-une-histoire-en-direct-2/ The first steps of television 26 April 1935: 1re emission "official" – INA , on blogs.ina.fr, 28 October 2010.
- ^ de Bussière, Michèle (1997). "Le livre des origines : Michel Amoudry René Barthélemy ou la grande aventure de la télévision française". Communication et Langages. 114 (114): 122.
- ^ Archives of Seine-et-Marne, commune of Nangis, birth certificate, year 1889 (with marginal mention of death) (pages 81 and 82/262)