telegraphoscope (English, noun)
expansion: telegraphoscope (plural telegraphoscopes)
Senses:
glosses: An instrument for telegraphically transmitting a picture and reproducing its image as a positive or negative. The transmitter includes a camera obscura and a row of minute selenium cells. The receiver includes an oscillograph, relay, equilibrator, and an induction coil whose sparks perforate a paper with tiny holes that form the image.
tags: historical
Forms:
form: telegraphoscopes
tags: plural