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W71NY ... was connected by land line to the WOR studios, just 4,000 feet away, although the station even experimented with a light beam link between the two loc
by WarOnPrivacy 2y ago
W71NY ... was connected by land line to the WOR studios, just 4,000 feet away, although the station even experimented with a light beam link between the two locations.
'Light beam link' sounds super innovative for ~1942.
- CamperBob2 2y agoThat particular tech goes back a lot farther (try 1880!): https://en.wikipedia.org/wiki/Photophone https://en.wikipedia.org/wiki/Photophone Bell found that many substances could be used as direct light-to-sound transducers. Lampblack proved to be outstanding. Using a fully modulated beam of sunlight as a test signal, one experimental receiver design, employing only a deposit of lampblack, produced a tone that Bell described as "painfully loud" to an ear pressed close to the device.