Hello
5 stars if someone answer well and extended
explaining the circumstances where general relativity and quantum gravity depart from Newton’s theory, giving one example of an effect or prediction for each of these alternative theories.
5 stars if someone answer well and extended
explaining the circumstances where general relativity and quantum gravity depart from Newton’s theory, giving one example of an effect or prediction for each of these alternative theories.
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There is no quantum gravity, so I cannot help with this portion of your question.
Differences between Newtonian Gravitation and General Relativity include the following observations:
- frame dragging (gravity probe B)
- the spindown of binary pulsars, losing angular momentum to the Universe
- gravitational time dilation
- the precession of the perihelion of Mercury
- gravitational lensing (including Einstein rings)
- expansion of the Universe
Newtonian gravity predicts zero for these effects. GR does not.
If there were a quantum theory of gravity, it would have results that look exactly like General Relativity in these domains. It might help explain that each different way we try and precisely measure G, we get different values for it, with variations in the 4th to 6th significant figure. 11 significant figures in sqrt( G * M_sun), so Kepler's laws make for a stable Universe.
Differences between Newtonian Gravitation and General Relativity include the following observations:
- frame dragging (gravity probe B)
- the spindown of binary pulsars, losing angular momentum to the Universe
- gravitational time dilation
- the precession of the perihelion of Mercury
- gravitational lensing (including Einstein rings)
- expansion of the Universe
Newtonian gravity predicts zero for these effects. GR does not.
If there were a quantum theory of gravity, it would have results that look exactly like General Relativity in these domains. It might help explain that each different way we try and precisely measure G, we get different values for it, with variations in the 4th to 6th significant figure. 11 significant figures in sqrt( G * M_sun), so Kepler's laws make for a stable Universe.