Asked by Barbara Davis

An object emitting 500nm wavelength light moves away from you at half of the speed of light. What is the observed wavelengths of the light?

Answers

Answered by Damon
say c = 3 * 10^8
so v = 1.5* 10^8
moving away so looks longer
delta lambda/ lambda = v/c
d L = 500 nm (.5) = 250 nm
so
250 + 500 = 750 nm

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