One of the earliest Electronic instruments, named after its creator
Leon Theremin
(1896–1992, b. Lev Sergeyevich Termen), who invented it just after the First World War, this consists of two poles that come out perpendicularly from a metal cabinet. Both poles respond not to touch, like traditional instruments, but to hand movements in the electrified air immediately around them. (Roberta Reeder and Claas Cordes write, He created his instrument while working on an alarm system to protect...
