Abbreviation for 'revolutions per minute'; a unit measuring rotational speed.
Formed from the initial letters of 'revolutions per minute' in the early 20th century as automotive and industrial machinery required standardized measurements of rotational speed. The concept became essential with the rise of internal combustion engines.
RPM perfectly captures humanity's relationship with mechanical precision - we took the ancient concept of circular motion and quantified it down to the minute. From vinyl records spinning at 33⅓ RPM to car engines revving at thousands, this simple acronym connects music, transportation, and industry.
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