Re:TV can see through walls
by dghughes on Tuesday November 10, 2026 @09:01AM
(#50440521)
1940s? The LASER device was invented in 1960. The Soviet spies used an infrared light beam.
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The point was light being used for audio, not specifically laser as a light source.
You seem to keep responding to multiple people defend your point, but he used 1320 MHz in the thing which is not light.
the words you use matter.
Speaking of, "light" has no frequency range. Radio waves are not visible light, but they are light!
They are not light, they are electromagnetic radiation, which light is part of.