The solutions to that equation yield … Since string theory is related to the theory of quantum gravity, a good place to begin is by giving an overview of the scientific understanding of gravity, which is defined by Einstein’s theory of general relativity. Einstein’s theory of gravitation is expressed in one deceptively simple-looking tensor equation (tensors are a generalization of scalars and vectors), which expresses how a mass determines the curvature of space-time around it. Einstein’s Gravity. Albert Einstein came with his question about Newton’s Law of Gravitation: Suppose, there is a force that exists between two … General relativity was Einstein’s theory of gravity, published in 1915, which extended special relativity to take into account non-inertial frames of reference — areas that are accelerating with respect to each other. Einstein spent more than seven years developing it, and it was worth the wait. If, as Newton claimed, gravity was a constant, instantaneous force, the information about a sudden change of mass would have to be somehow communicated across the entire universe at once. Einstein derived his theory using mathematics. The solutions to that equation yield … The effects of […] Einstein’s theory also triumphantly punched a hole in Newton’s logic. Why talk of curvature? General relativity takes the form of field equations, describing the curvature of space-time and the distribution of matter throughout space-time. Visualizing Einstein’s Ideas. Einstein’s theory of gravitation is expressed in one deceptively simple-looking tensor equation (tensors are a generalization of scalars and vectors), which expresses how a mass determines the curvature of space-time around it. The solutions to that equation yield … "At some level, the majority of physicists believe that Einstein's theory of gravity, called general relativity, is correct. In Einstein's hands gravitation theory was thus transformed from a theory of forces into the first dynamical theory of geometry, the geometry of four dimensional curved space-time. The most successful theory of gravity known to humanity is Einstein's famous theory of general relativity. https://phys.org/news/2020-10-einstein-description-gravity-harder.html Instead of gravity as a force acting between objects, Einstein […] Albert Einstein would revolutionize the way physicists saw gravity. Einstein’s theory of gravitation is expressed in one deceptively simple-looking tensor equation (tensors are a generalization of scalars and vectors), which expresses how a mass determines the curvature of space-time around it. Instead, Einstein showed that gravity is a result of the warping, or curving, of space and time, which made up the same space-time “fabric.” These ideas about space-time and gravity became known as Einstein’s theory of general relativity.
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