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Vacuum tube diodes

Vacuum tube diodes

C008/7361

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40.1 MB (1.8 MB compressed)

4794 x 2923 pixels

40.6 x 24.6 cm ⏐ 16.0 x 9.7 in (300dpi)

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Credit

EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY

Restrictions:

Editorial use only.

Caption

Vacuum tubes. These vacuum tube, or thermionic valve, diodes were invented by John Ambrose Fleming in 1904. He used the diodes to rectify high-frequency oscillations in radio equipment, allowing weak signals to be detected. Photograph from 'The Thermiotic Valve and its Developments in Radio-Telegraphy and Telephony,' by John Ambrose Fleming, 1924. Restrictions:.

Release details

Model release not required. Property release not required.

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