Doppler wavelength shift equation

[bse]

Can anyone tell me what the doppler wavelength shift equation is?

thanks

 

[ManDay]

There are two/three. One for a moving emitter, one for a moving receiver and one that combines both. Just look at http://en.wikipedia.org/wiki/Doppler_effect

 

[bse]

I'm trying to find the wavelength shift for light with a certain wavelength that is emitted from the sun. Is there a different kind of equation for light wavelength shifts?

 

[Zhivago]

There's the relativistic Doppler shift, \lambda= \lambda _0 \sqrt{ \frac{1+v}{1-v}}
But if you're only making the correction of the speed Earth to Sun, the classical formula is enough, I think