what is the unit for measuring frequency
The time between each flash â the period T â is given by 1âf (the reciprocal of f â), i.e. 2, 1 and 0.5 seconds, respectively. The hertz (symbol Hz) is the unit of frequency in the International System of Units (SI) and is defined as one cycle per second. It is named for Heinrich Rudolf Hertz, the first person to provide conclusive proof of the existence of electromagnetic waves.