PICTURES BY RADIO

E&MP 96.017

Phototelegraphy

JUNE 20, 1928 (public on Sept. 11, 1928)

Facsimile "scanner", or sender, employed in the RCA transoceanic system.

Sending apparatus in transoceanic transmission of pictures where photographs are scanned by light beam.

Photoelectric cells register the varying light intensity on picture and turn it into radio impulses.

This system uses short waves. The newest improvement is to use microwaves, only inches instead of feet long.

Ordinary broadcasting is done with radio waves a thousand and more feet in length.

PHOTO ## 92819

also see image 96.029 within this archive collection

Original Caption by Science Service
© Radio Pictures Laboratory Washington D.C.