The man in this semi-fictional vignette was Lev Sergeyevich Termen, better known in the western world as Léon Theremin. You know Theremin for the musical instrument which bears his name.

There’s no instrument spookier than a Theremin, which also happens to be one of the world’s first electronic instruments. Leon Theremin plays his namesake instrument. Image via Linda Hall ...

Theremins are played by moving your hands near (but not touching) two antenna. One antenna controls pitch, the other controls volume. Theremins work by creating two AC currents using two capacitors ...