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3 days ago · General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General relativity generalizes special relativity and refines Newton's law of universal gravitation ...
5 days ago · Einstein used the expression "special theory of relativity" in 1915, to distinguish it from general relativity. Relativistic theories Gravitation. The first attempt to formulate a relativistic theory of gravitation was undertaken by Poincaré (1905). He tried to modify Newton's law of gravitation so that it assumes a Lorentz-covariant form.
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2 days ago · t. e. In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 treatment, the theory is presented as being based on just two postulates: [p 1] [1] [2] The laws of physics are invariant (identical) in all inertial frames of ...
Mar 27, 2024 · 7. General Theory of Relativity. The General Theory of Relativity states that the laws of physics remain the same in all inertial frames of reference, regardless of their relative velocity. This theory replaced Newton’s law of universal gravitation which stated that an object’s acceleration was determined by its mass and the force of ...
3 days ago · At speeds that are a substantial fraction of the speed of light, the framework of Newtonian mechanics no longer suffices to describe many physical phenomena. Instead, one must start to take into account Einstein's theory of special relativity, which deals with the "special" case of physics in the absence of gravity. The more "general" case of general relativity takes ...
Mar 28, 2024 · Newton’s first law: the law of inertia. When a basketball player shoots a jump shot, the ball always follows an arcing path. The ball follows this path because its motion obeys Isaac Newton's laws of motion. Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep ...
Mar 31, 2024 · A subsequent paper of Einstein (1917) applies the theory of general relativity to cosmology, and in fact represents the birth of modern cosmology.In it, Einstein looks for models of the entire universe that satisfy his equations under suitable assumptions about the large-scale structure of the universe, such as its “homogeneity,” meaning that space-time looks the same in any part as any ...
