hertz

名词 hertz:

1. the unit of frequency; one hertz has a periodic interval of one second
   同义词：Hz, cycle per second, cycles/second, cps, cycle
2. German physicist who was the first to produce electromagnetic waves artificially (1857-1894)
   同义词：Heinrich Hertz, Heinrich Rudolph Hertz
3. German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975)
   同义词：Gustav Hertz, Gustav Ludwig Hertz

1. The difference, expressed in Hertz, between the two limiting frequencies of a band.
   一个频带的上下界频率之差，单位用赫兹表示。