# How do you calculate frequency of a wave?

##### 1 Answer

Jul 14, 2014

Thanks for your question regarding the calculation of the frequency of a wave.

In light (as in sound), the equation for determining frequency involves knowing the speed of the wave, the wavelength of the wave, and the wave's frequency. The equation is:

Speed (or velocity) = wavelength X frequency

If you are dealing with an electromagnetic wave and it is travelling through space or air, its speed is pretty much 2.997 X 1

I hope this helps. If you have questions involving Planck's constant and frequency, please ask.

Thanks.