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What is the general theory of relativity
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in physics? Definition. The general
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theory of relativity proposed by Albert
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Einstein in 1915 is a theory of
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gravitation that describes gravity not
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as a force but as the curvature of
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spacetime caused by mass and energy.
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Explanation Einstein extended his
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special theory of relativity to include
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acceleration and gravity. The key idea
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is that massive objects like Earth,
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stars, or black holes bend the fabric of
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spacetime. And this curvature tells
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objects how to move. Instead of being
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pulled by a mysterious force, planets
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and light follow curved paths in curved
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spacetime. Time itself is affected by
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gravity. Clocks run slower and stronger
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gravitational fields. Gravitational time
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dilation. Light bends when passing near
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massive bodies. Gravitational lensing.
