Hertz (Hz)

Hertz (Hz) is a unit of frequency that measures how many times something occurs in one second. For example, if a sound wave vibrates 440 times each second, it is said to have a frequency of 440 Hz. In electronics and signals, Hertz describes how often signals, waves, or cycles repeat per second. This measurement helps us understand the pitch of sounds, the speed of electrical signals, or the refresh rate of screens. Essentially, Hertz quantifies the rate of repetitive events within one second.