Doppler Effect

Classical Doppler Shift (Light)
The equation for classical doppler shift is outlined below

$$\frac {\lambda _{obs} - \lambda _{rest}}{\lambda _{rest}} = \frac {v _r}{c}$$


 * $$\lambda _{obs}$$ is the observed wavelength
 * $$\lambda _{rest}$$ is the original emitted wavelength
 * $$v _r$$ is the relative velocity from the source to the observer
 * $$c$$ is the speed of light

It is a simple switch from wavelength to frequency using $$\lambda\nu = c$$

$$\frac {\nu _{rest} - \nu _{obs}}{\nu _{obs}} = \frac {v _r}{c}$$