Ernst Ruhmer
(1878-1913)
German physicist
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Ernst Walter Ruhmer (15 April 1878 – 8 April 1913) was a German physicist. He was best known for investigating practical applications making use of the light-sensitivity properties of selenium, which he employed in developing wireless telephony using line-of-sight optical transmissions, sound-on-film audio recording, and television transmissions over wires.
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| Born |
15 April 1878
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| Died |
8 April 1913 (aged 34)
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