The unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz).

synonyms: cps, cycle, cycle per second, cycles/second, Hz.

Dutch: hertz
Polish: Hz, herc

German physicist who was the first to produce electromagnetic waves artificially (1857-1894).

synonyms: Heinrich Hertz, Heinrich Rudolph Hertz.

German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975).

synonyms: Gustav Hertz, Gustav Ludwig Hertz.