The inventor of the theremin also made one of the first bugs.

1945 · 1952 · apart: 7 years

In 1945 Soviet schoolchildren gave the US ambassador a carved Great Seal with Leon Theremin's listening device inside — and it hung in his Moscow office for seven years.

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The event

• Leon Theremin invents the theremin1920 · Petrograd. In October 1920 the physicist Lev Termen demonstrated an instrument whose pitch changes as the player's hands move near two antennas. In 1922 he was invited to the Kremlin, where Lenin himself tried to play Glinka's 'The Lark' on it. Termen later toured Europe and the USA with it.

20th century

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