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1935 - PHOTONA tone-shutter discs in complete detail

WCAU PHOTONA

E&MP 88.011

Music Recording - Electronic

ca. 1935

A front view of the "WCAU Photona" showing the tone-shutter discs in complete detail.

These discs revolve and the light beams flash thru the shutters to the photo-electric cell and produce the tones of the instrument.

Photo No. 7


Original Caption by Science Service
© MODERN ART STUDIOS



National Museum of American History

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