The unit of frequency equal to one cycle per second, used to measure waves, vibrations, and alternating currents.
Named after German physicist Heinrich Hertz (1857-1894) who proved the existence of electromagnetic waves. The term was adopted as the standard unit of frequency by the International Committee for Weights and Measures in 1960.
Heinrich Hertz ironically didn't believe his discovery of radio waves would have practical applications, famously saying they were 'of no use whatsoever.' Today, hertz measurements are fundamental to everything from your smartphone's processor speed to the pitch of musical notes.
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