Invention of the Day: Electronic Music.

In 1920, a Russian inventor, Professor Léon Theremin created an electric device that could be played without touching. In 1928, he received a patent for his invention and licensed it to RCA. The device started a technology revolution that eventually brought about electric guitars, organs, and even violins.

I claim:

1. A tone generating system controlled by the hand and comprising an electrical circuit embodying an oscillation generator, 'means in said circuit including a conductor having a field which when influenced by a hand moving therein will vary the resonant frequency of said circuit according to the movement of said hand only, and a sound reproducer connected with said circuit for emitting tones according to the electrical variations occurring in the circuit.

 The video below shows how you can play the device (simply amazing!)

tags: invention, entertainment