Suppose you are viewing some red light coming from a galaxy far, far away. The wavelength...

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Physics

Suppose you are viewing some red light coming from a galaxy far,far away. The wavelength of the red light is expected to be 6300 nmif the relative speed of the galaxy with respect to your world iszero. That is, if the galaxy and you are not moving toward or awayfrom each other. However, you observe a wavelength that is longerthan expected. How would you interpret thisobservation?     Recall thefrequency dependence of the Doppler shift: f’ = f(1 + u/c).

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If the galaxy and the observer are moving toward each otherthen the Doppler shifted frequency isAnd so the wavelength of the Doppler shifted wave isAnd so we see that as u 0 soSo when the    See Answer
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