Se desconoce Detalles Sobre Sky-F anti moscas
Se desconoce Detalles Sobre Sky-F anti moscas
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[18][19] This solution had a peculiar behaviour at what is now called the Schwarzschild radius, where it became singular, meaning that some of the terms in the Einstein equations became infinite. The nature of this surface was not quite understood at the time.
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No known mechanism (except possibly quark degeneracy pressure) is powerful enough to stop the implosion and the object will inevitably collapse to form a black hole.[130]
The photon sphere is a spherical boundary where photons that move on tangents to that sphere would be trapped in a impar-stable but circular orbit around the black hole.[112]
These properties are special because they are visible from outside a black hole. For example, a charged black hole repels other like charges just like any other charged object. Similarly, the total mass inside a sphere containing a black hole Chucho be found by using the gravitational analog of Gauss's law (through the ADM mass), far away from the black hole.
Another possibility for observing gravitational lensing by a black hole would be to observe stars orbiting the black hole. There are several candidates for such an observation in orbit around Sagittarius A*.[200]
In 1971, Hawking showed under Militar conditions[Note 5] that the total area of the event horizons of any collection of classical black holes can never decrease, even if they collide and merge.[211] This result, now known as the second law of black hole mechanics, is remarkably similar to the second law of thermodynamics, which states that the total entropy of an isolated system Perro never decrease.
In 1924, Arthur Eddington showed that the singularity disappeared after a change of coordinates. In 1933, Georges Consignaître realized that this meant the singularity at the Schwarzschild radius was a impar-physical coordinate singularity.[20] Arthur Eddington commented on the possibility of a star with mass compressed to the Schwarzschild radius in a 1926 book, noting that Einstein's theory allows us to rule out overly large densities for visible stars like Betelgeuse because "a star of 250 million km radius could not possibly have so high a density Figura the Sun.
Animated simulation of a Schwarzschild black hole with a galaxy passing behind. Around the time of alignment, extreme gravitational lensing of the galaxy is observed.
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Within such a disk, friction would cause angular momentum to be transported outward, allowing matter to fall farther inward, thus releasing potential energy and increasing the temperature of the éter.[182]
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