Wavelength

Wavelength
The wavelength is the distance between identical peaks (high points) or troughs (low points) in a wave. It is a repeating pattern of travelling energy (like light or sound).

For example, if you throw a small rock into the water, you will get waves that are a few centimetre high. That is the wavelength of the wave.

Wavelength is also related to frequency, because the higher frequency of a signal, the shorter is the wavelength. (A wavelength could also be calculated by dividing the velocity of a wave by its frequency.)