when a light beam approaches you, its frequency is greater and its wavelength less.?

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when a light beam approaches you, its frequency is greater and its wavelength less.?

Does this contradict the postulate that the speed of light cannot change?

2007-05-10 05:19:53 · 2 answers · asked by Isabel P 1 in Science & Mathematics ➔ Physics

2 answers

Only if we're moving toward each other. The speed is the same but it does get color shifted.

2007-05-10 05:23:40 · answer #1 · answered by Gene 7 · 0⤊ 0⤋

no, it doesn't. cos the formula for the velocity of a wave is frequency*wavelength

so when i say that these 2 parameters change, they'll still remain in the same ratio as before, giving u the same velocity

2007-05-10 05:24:53 · answer #2 · answered by tut_einstein 2 · 0⤊ 0⤋