Vacuum Tube Photograph - Marconi Radio Valve by Humanities & Social Sciences Librarynew York Public Library

Marconi Radio Valve is a photograph by Humanities & Social Sciences Librarynew York Public Library which was uploaded on May 9th, 2013.

Marconi Radio Valve

Marconi radio valve. This is a Marconi transmitter valve of the type M.T.6. Marconi patented his radio equipment in 1896, founding a company in 1897... more

by Humanities & Social Sciences Librarynew York Public Library

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Title

Marconi Radio Valve

Artist

Humanities & Social Sciences Librarynew York Public Library

Medium

Photograph

Description

Marconi radio valve. This is a Marconi transmitter valve of the type M.T.6. Marconi patented his radio equipment in 1896, founding a company in 1897 to build the new equipment. The thermionic valve, or vacuum tube, first developed in 1906, is a device used to amplify or modify a voltage, in this case to transmit a radio signal. Photograph courtesy of the Radio Corporation of America, New York, USA, formed in 1920 from the American Marconi Company. Photographed for The March of Commerce (1927), volume 4 of The Pageant of America A Pictorial History of the United States, a 15-volume series that commemorated 150 years since the founding of the USA in 1776.

Uploaded

May 9th, 2013