# How do you calculate the frequency of a wave?

Jun 28, 2018

Well you use an equation for that...

#### Explanation:

Frequency of a wave is given by the equations:

• $1. f = \frac{1}{T}$

where:

• $f$ is the frequency of the wave in hertz

• $T$ is the period of the wave in seconds

• $2. f = \frac{v}{\lambda}$

where:

• $f$ is the frequency of the wave in hertz

• $v$ is the velocity of the wave in meters per second

• $\lambda$ is the wavelength of the wave in meters

For electromagnetic waves, they all travel at the speed of light, and so their velocity becomes $c$. Thus, we make a third equation, which is:

• $3. f = \frac{c}{\lambda}$