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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

All galaxies farther away than about 50 × 10 6 ly exhibit a red shift in their emitted light that is proportional to distance, with those father and farther away having progressively greater red shifts. What does this imply, assuming that the only source of red shift is relative motion? (Hint: At these large distances, it is space itself that is expanding, but the effect on light is the same.)

To determine

The reason due to which the red shift exhibits in the light source of galaxies which are far away.

Explanation

Introduction:

Red shift is the shift of wavelength of the light when the observer moves away from the source. This is basically the Doppler effect shift in light wave.

All galaxies are very far away from us but they are moving with the velocity and they are continuously expanding. But according to theory of relativity second postulate, the speed of light is independent of the medium, means speed of light is same everywhere...

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