Library — X
This page provides access to all physics articles covering topics that begin with the letter X.
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Detection of Black Hole
Black holes, once regarded as rare curiosities of physics, are now understood to be widespread features of the universe, with their frequency depending on their type and size. Stellar-mass black holes, the remnants of massive…
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Spaghettification by Black Hole
Spaghettification, a term coined to describe the extreme tidal stretching experienced by matter in the vicinity of a black hole, arises from the fundamental nature of gravitational fields in general relativity and their variation with…
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Gravitational Lensing by Black Hole
Gravitational lensing due to a black hole is a direct consequence of the curvature of spacetime predicted by Einstein’s general theory of relativity, in which gravity is not treated as a force acting at a…
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Existence of black hole
Black holes exist as a direct and unavoidable consequence of the fundamental structure of gravity as described by modern physics, particularly general relativity, combined with the properties of matter at extreme densities. Their existence is…
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Singularity of black hole
In the context of general relativity, the term “singularity” in a black hole refers to a region in spacetime where the curvature becomes unbounded and the classical description of gravity breaks down. The modern concept…