Action (physics)
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What links here
World line
Closed timelike curve
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Schwarzschild metric
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Newton's law of universal gravitation
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Four-velocity
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Four-vector
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Trajectory
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Hermann Minkowski
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Spin network
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Comoving and proper distances
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Curve
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Life-Line
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Timeline of gravitational physics and relativity
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Timeline
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Wormhole
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Time travel
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Twin paradox
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Time
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Outline of physics
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General relativity
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Force
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Enrico Fermi
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