The speed of gravitational field propagation

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SUMMARY

The forum discussion centers on the speed of gravitational field propagation, specifically questioning whether gravity must propagate at the speed of light (c) as per general relativity (GR). Participants reference experimental measurements of gravity's speed, which suggest it propagates at approximately 0.95c with a 0.25 experimental error margin. The conversation highlights the theoretical implications of gravitational propagation delays on orbital stability and critiques the explanations provided by physicists like Carlip regarding these effects. The discussion also touches on the complexities of gravitational waves and their relationship to gravitational forces.

PREREQUISITES
  • Understanding of general relativity (GR) principles
  • Familiarity with gravitational waves and their properties
  • Knowledge of experimental physics related to gravity measurement
  • Basic comprehension of orbital mechanics and stability
NEXT STEPS
  • Research the implications of gravitational wave propagation on orbital mechanics
  • Study the experimental methods used to measure the speed of gravity
  • Explore the theoretical frameworks surrounding gravitational waves and their interactions
  • Investigate the works of physicists like Carlip and Van Flandern on gravity propagation
USEFUL FOR

Physicists, astrophysicists, and students of general relativity interested in the nuances of gravitational field propagation and its implications for orbital stability and gravitational wave theory.

  • #61
Things to do for today:

1. switch on GPS, see if it works.

2. Look at the picture below, and describe in terms of mass and force what is happening.
 

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  • #62
Locked for moderation.
 

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