Who invented the theremin?
The theremin was invented in 1920 by Russian physicist Léon Theremin while he was researching sensors that detect motion.
Reference: Zadar Tourist Board
The theremin was invented in 1920 by Russian physicist Léon Theremin while he was researching sensors that detect motion.
The Sea Organ in Zadar, Croatia, built in 2005 by architect Nikola Bašić, is played by ocean waves.
Construction of Germany's Cologne Cathedral started in 1248 and was not finished until 1880, more than 600 years later.