1920s television transmitting apparatus

1920s television transmitting apparatus

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Caption: 1920s television transmitting apparatus, artwork. Early transmitting systems included three large photo-electric cells which produce electric current in response to light reflected from the details of the scene. Light from the arc lamp (far right) passes through a lens to the scanning disc (black disc, middle), which sweeps the light beam across the scene. The light reflects off the woman and is picked up by the photo-electric cells (long tubes, centre) which convert it into an electric signal. The electric signal is then passed on to a television receiver (television set) and converted back into light to produce an image on its screen.

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Keywords: 1900s, 1920s, 20th century, arc lamp, artwork, communication, communications, device, early, early television transmitter, electronic, electronics, equipment, female, historical, history, history of science, human, illustration, machine, people, person, photo electric cell, photo electric cells, photo-electric cell, photo-electric cells, photo-electricity, photo-emissive, photo-emissivity, photoelectric, photoelectricity, physical, physics, scanning disc, technological, technology, telecommunication, telecommunications, television, television transmitter, transmitter, tv, twenties, twentieth century, woman

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