User talk:Comrade009From Wikipedia, the free encyclopedia λ o = λ s 1 − v / c 1 + v / c {\displaystyle \lambda _{o}=\lambda _{s}{\sqrt {\frac {1-v/c}{1+v/c}}}} λ s = {\displaystyle \lambda _{s}=} the wavelength of the light emitted from the source (the traffic light) λ o = {\displaystyle \lambda _{o}=} the observed wavelength (by the person in the car) v = the relative velocity (in this case, the speed of the car) c = the speed of light (exactly 299,792,458 m/s)
λ o = λ s 1 − v / c 1 + v / c {\displaystyle \lambda _{o}=\lambda _{s}{\sqrt {\frac {1-v/c}{1+v/c}}}} λ s = {\displaystyle \lambda _{s}=} the wavelength of the light emitted from the source (the traffic light) λ o = {\displaystyle \lambda _{o}=} the observed wavelength (by the person in the car) v = the relative velocity (in this case, the speed of the car) c = the speed of light (exactly 299,792,458 m/s)