FM broadcasting is a method of radio broadcasting using frequency modulation (FM).
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Cellophone
invented by Jacques E. Brandenberger.
Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low…
Laser
invented by Theodore Maiman
A laser is a device that emits light through a process of optical amplification…
Crystal oscillator
invented by Alexander M. Nicholson
A crystal oscillator is an electronic oscillator circuit that uses the…
Kaplan turbine
invented by Viktor Kaplan
The Kaplan turbine is a propeller-type water turbine which has adjustable…
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