What is hz meaning?

Hz stands for Hertz, which is a unit of frequency measurement. It is used to describe the frequency of any periodic event or vibration, such as sound waves, electromagnetic waves, or alternating current (AC) electricity. One hertz (1 Hz) means that the event or vibration occurs one time per second. It is named after Heinrich Hertz, the German physicist who first demonstrated the existence of electromagnetic waves. The higher the frequency, the more cycles per second, and the shorter the wavelength. Hz is commonly used in audio and video technology, physics, and engineering.