## SI derived quantity: frequency

This category of measurement units is defined by the
"frequency" type, which is an SI derived quantity.

## SI unit: hertz

The SI derived unit for frequency is the hertz.

## Definition: Hertz

The hertz (symbol Hz) is the SI unit of frequency. It is named in honour of the German physicist Heinrich Rudolf Hertz who made some important contributions to science in the field of electromagnetism.

## Frequency units