Basic Ideas of General Relativity
Einstein’s special relativity rejected the ether concept of a privileged inertial frame of reference, which still depended on the concept of inertial frames. What is so special about these frames? This remained a mystery in special relativity, and it was reserved for general relativity to solve, or at least to elucidate, this problem.
KeywordsInertial Frame Equivalence Principle World Line Gravitational Mass Absolute Space
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