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Q & A: gravitational red shift

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Most recent answer: 02/08/2019
Q:
I know that light can be affected by gravity. It can bend way light travel. My question is if you send light from gravity well will it affect it wave length or frequency? Other way to put it: will gravity red shift light if its close behind source of that light?
- Sim (age 37)
ireland
A:

Yes, the gravitational red shift from stars has been been measured. It's important in understanding emissions from the sort of very massive objects whose collisions are detected by gravitational waves.

Mike W.


(published on 02/08/2019)

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