Ernst Ruhmer, Date of Birth, Place of Birth, Date of Death

Ernst Ruhmer

German physicist (1878–1913)

Date of Birth: 15-Dec-1878

Place of Birth: Berlin

Date of Death: 08-Apr-1913

Profession: physicist, inventor

Nationality: Germany, German Empire

Zodiac Sign: Sagittarius

Ernst Walter Ruhmer (April 15, 1878 – April 8, 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.