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General Theory of Relativity
(a gravity theory): Ingredients: The Principle of Equivalence: acceleration ~ gravity Riemann's Curved Geometry: acceleration ~ curved space-time ( ' ~ ' means 'is equivalent to'.) This implies: gravity ~ curved space-time (Einstein's Field Eqns.) This is important when objects are massive, like sun or black hole. Supercedes Newton's Law in these cases. Three experimental-observational proofs of General Relativity: 1. Perihelion precession of Mercury's orbit. (Slow rotation of ellipse. 2. Light bends near the sun. Time slows in a strong gravity field. (Ex. Gravitational redshift, and clocks flown in planes vs those on ground.)
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The General Theory of Relativity (GTR)
is based on: The Principle of Equivalence: acceleration ~ gravity Conceived by Ernst Mach
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George Riemann Riemann's Curved Geometry was another ingredient: acceleration ~ curved space-time
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The essential idea of Einstein’s GTR gravity ~ curved space-time
(Einstein's Field Eqns. ) This is important when objects are massive, like sun or black hole. Supercedes Newton's Law in these cases.
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Black hole—HELP! We need Einstein!
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Three experimental-observational proofs of General Relativity:
Perihelion precession of Mercury's orbit (slow rotation of ellipse 16 degrees/10,000 yrs).
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Three experimental-observational proofs of General Relativity:
2. Light bends near the sun.
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Arthur Eddington went to South Africa
during a total eclipse of the sun To test the bending of light by the sun’s gravity.
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Three experimental-observational proofs of General Relativity:
3. Time slows in gravity
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