Doppler shift

[Joe Elliott <jee@domain.elided>]

It's the other way around.  As the light waves stack up in front of 
your car, the increased frequency will shift the light towards the 
blue end of the spectrum.  As the light waves behind you get spread 
out, the decreased frequency will shift the light towards the red end 
of the spectrum.  To compute the new color of your taillights for 
example (red shift), just take B as a your speed as a fraction of the 
speed of light and set B = (r^2 - 1)/(r^2 + 1) and solve for r.  r is 
the ratio of the wavelengths of the 'at rest' color and the color 
observed by a stationary observer.

At 11:47 AM -0500 2/20/02, alfa-digest wrote:
>( As the owner of a Red Alfa..does
>it get redder to observers in front as the red shift takes effect as you
>accelerate at vast speeds towards them, and would it look bluer to those left
>behind)

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