Meet Leon Theremin, a Russian physicist, inventor, and musician, who developed not only a musical instrument that can be played without being touched, but also a spying device that was successfully planted in the U.S. ambassador's residence in Moscow.
***
For more explainers, graphics and videos, visit: www.rferl.org/Multimedia or follow us on:
Facebook / rferl
Twitter / rferl
Instagram / rfe.rl
Telegram telegram.me/rferl
We report the news in 22 countries without a free press. Our journalists are a unique source of information from the front lines. www.rferl.org/
#theremin #inventor #history