Hertz is a units for measuring:
Frequency of Waves
Hertz is a unit for measuring ‘Frequency of Waves‘. It is a International system of units and its defined as one cycle per second. Hertz named in honour of the German physicist Heinrich Rudolf Hertz. Heinrich Hertz (1857-1894) was a renowned German Physicist, he made possible the development of radio, television and radar by providing that electricity can be transmitted in electromagnetic waves.
In 1887, after published the theory of Maxwell’s electromagnetism. He proved that electricity can be transmitted in electromagnetic waves, which travel at the speed of light and possess many other properties of light. Hertz also used to measure the speed of computer processors.