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An X-ray of Historic Audion vacuum tube

An X-ray of Historic Audion vacuum tube

T355/0269

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Credit

EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY

Caption

An X-ray of Historic Audion vacuum tube. This tube made in the 1920's was the first circuit used to amplify radio and television signals. This tube proved critical for the development of television. The Audion vacuum tube was invented in 1906 by Lee de Forest.

Release details

Model release not required. Property release not required.

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