hertz

- Unit of frequency, signifying one cycle (such as a complete wave of electromagnetic radiation) per second

- The
__SI__unit of frequency. It is__equal__to one complete__cycle__of a periodic phenomenon, such as an electromagnetic__wave__, per__second__. Frequencies are expressed in multiples of hertz, such as kilohertz,__terahertz__, and so on. It is__equivalent__to cycles per second, which is an obsolescent term. Hertz contrasts with__becquerel__, which measures__phenomena__that occur in an unpredictable manner, such as radioactive disintegrations. Its abbreviation is Hz.

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