hertz
herts
- n the unit of frequency; one hertz has a periodic interval of one second
- n German physicist who was the first to produce electromagnetic waves artificially (1857-1894)
- n German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975)
- Carbon-monoxide molecules, for example, radiate at an incredible 115 billion hertz (115 billion cycles per sec.