General Relativity Explained in 7 Levels of Difficulty

General relativity, developed by Einstein, describes gravity as the curvature of spacetime. It unifies space and time into a single entity and explains gravity through the Einstein field equations. These equations predict gravitational phenomena around massive objects and have been verified through various experiments. General relativity also explains everyday gravity as the result of following a straight path in curved spacetime. However, it struggles to align with quantum mechanics, posing challenges for physicists seeking a unified theory.

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