- #1
cang.ye1
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GR predict that a photon climbing in the Earth's gravitational field will lose energy and will consequently be redshifted.
A test was done by Pound and Snider in 1965 using the Mossbauer effect
They measured the redshift experienced by a 14.4 Kev rays from the decay of Fe in climbing up a 20 m tower by determining the speed at which a detector at the top must be moved in order to maximize the detection rate i.e. the velocity blueshift balances the gravitational redshift.
My question is: how the frequency can be changed by gravitation?
Suppose sender was turned on for 1 month, it send N(very very huge number) waves, how many waves the receiver should receive? It's definitely N. No wave is lost or created in the 22.6 meter long road.
The sender keeps sending for 1 month, how long the receiver takes to receive the N waves? it's 1 month exactly.
Frequency v = N / T, how the receiver can get a different frequency? redshift or blueshift?
If gama ray device is not good for 1 month non-stop sending, we can use a short wave radio. It's the same but easier to think and understand.
A test was done by Pound and Snider in 1965 using the Mossbauer effect
They measured the redshift experienced by a 14.4 Kev rays from the decay of Fe in climbing up a 20 m tower by determining the speed at which a detector at the top must be moved in order to maximize the detection rate i.e. the velocity blueshift balances the gravitational redshift.
My question is: how the frequency can be changed by gravitation?
Suppose sender was turned on for 1 month, it send N(very very huge number) waves, how many waves the receiver should receive? It's definitely N. No wave is lost or created in the 22.6 meter long road.
The sender keeps sending for 1 month, how long the receiver takes to receive the N waves? it's 1 month exactly.
Frequency v = N / T, how the receiver can get a different frequency? redshift or blueshift?
If gama ray device is not good for 1 month non-stop sending, we can use a short wave radio. It's the same but easier to think and understand.