Leon Theremin Inventor Of A Musical Instrument That Requires No Human Touch
The "Theremin" is an early electronic musical instrument controlled without any physical contact from the player. It is named after its Russian inventor, Professor Leon Theremin who patented the device in 1928. The controlling section usually consists of two metal antennas which sense the position of the player's hands and control pitch with one hand, and volume with the other, so it can be played without being touched. The electric signals from the theremin are amplified and sent to a speaker.

