Pound & Rebka Experiment: Earth's Spin Rotation Speed

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SUMMARY

The Pound & Rebka experiment, which measures gravitational time dilation, does not require accounting for speed differences between the source and receiver due to Earth's rotation. The experiment was conducted at a height difference of 22.5 meters, and the analysis was performed in the rest frame of the apparatus, where both source and receiver are at rest. The effects of any relative transverse velocity are negligible and do not influence the results significantly, as confirmed by the original paper and subsequent discussions.

PREREQUISITES
  • Understanding of gravitational time dilation principles
  • Familiarity with the Pound & Rebka experiment methodology
  • Knowledge of frame-dependent quantities in physics
  • Basic concepts of centrifugal force and its effects on gravitational acceleration
NEXT STEPS
  • Study the original Pound & Rebka experiment paper for detailed methodology and results
  • Explore gravitational time dilation calculations using the Schwarzschild solution
  • Investigate the effects of centrifugal force on gravitational measurements
  • Learn about frame-dependent versus invariant quantities in physics
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Physicists, students of general relativity, and anyone interested in experimental physics and gravitational effects on time measurement.

  • #31
Sagittarius A-Star said:
In the OP it does not say "the relative velocity between the source and the emitter"
It says "speed difference", yes. That's just a quibble over terminology. You can go back and make that substitution in all of my posts; it won't change anything of substance.

Sagittarius A-Star said:
In the ECI, you can calculate invariant quantities
Sure, but the "speed difference" is not one of them.
 
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  • #32
Vanadium 50 said:
Except Dale.
As far as I can tell, @Dale agrees with me. If I'm mistaken about that, he can correct me.
 

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