Black holes have the universe's most inscrutable poker faces.When you've seen one black hole with a given mass, charge, and spin (though you've learned these thing indirectly, through their effect on surrounding gas and stars.) you've definitely seen them all.black holes contain the highest possible entropy.Brian Greene, The Elegant Universe (1999).called them black holes-black because they cannot emit light, holes because anything getting too close falls into them, never to return. He showed that if the mass of a star is concentrated in a small enough spherical region, so that it's mass divided by its radius exceeds a particular critical value, the resulting space-time warp is so radical that anything, including light, that gets too close to the star will be unable to escape its gravitational grip. " Schwarzschild's solution"-revealed a stunning implication of general relativity.Freeman Dyson, Infinite in All Directions (1989) Ch.The collapsing star can continue to fall freely forever. is perpendicular to the direction of time as seen from the outside. motion slow down and stop because the direction of time inside. is so strongly curved that space and time become interchanged. permanent freefall without ever reaching the bottom. But Einstein's equations have the peculiar consequence. ou would imagine that the freefall could not continue. All parts of the star fall more or less freely inward.
After the nuclear fuel is used up, the star goes into a state of gravitational collapse.Marcia Bartusiak, Through a Universe Darkly: A Cosmic Tale of Ancient Ethers, Dark Matter, and the Fate of the Universe (1993).The elements in the stars themselves were telling the tale in the spectral messages they were telegraphing throughout the cosmos. Yet the first tentative steps toward understanding this great metamorphosis, the distinct and striking stages in a star's life, were taken at the turn of the century. Stars that are born with appreciably more mass than our Sun, such as the white-hot O and B stars, will burn swiftly and eventually blow up, leaving behind a city-sized neutron star or even a black hole, a gravitational pit from which no light or matter can escape.the term black hole wasn't even coined until 1968. Smaller stars, such as tiny red dwarfs, will never reach the red-giant stage but just dully burn away like red-hot ovens. A star does not evolve over its lifetime through each spectral type, as Russell once thought rather, each star experiences its own distinct history, based on its mass at birth.Quotes Black hole with corona, X-ray source (artist's concept). The discovery of neutron stars sparked interest in gravitationally collapsed compact objects as a possible astrophysical reality. Quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916. Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace. ~ Stephen HawkingĪ black hole is a region of spacetime exhibiting such strong gravitational effects that nothing-not even particles and electromagnetic radiation such as light-can escape from inside it.
So if you feel you are in a black hole, don't give up. Things can get out of a black hole, both to the outside, and possibly to another universe. They are not the eternal prisons they were once thought. The film was nominated for two Academy Awards for Best Cinematography and Best Visual Effects.Black holes ain't as black as they are painted. The film received mixed reviews from film critics. It was the first film from Walt Disney Productions to receive a PG rating. The film was released on December 18, 1979, in the United Kingdom and on December 21, 1979, in the United States. Additionally, Disney's effects department used computerized camera technology to create the visual effects. However, the script went through numerous iterations from various screenwriters. In the early 1970s, the film was initially conceived as a space-themed disaster film.
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With a production budget of $20 million, plus another $6 million for advertising, it was at the time the most expensive picture ever produced by Disney. The music for the film was composed by John Barry. The film stars Maximilian Schell, Robert Forster, Joseph Bottoms, Yvette Mimieux, Anthony Perkins and Ernest Borgnine, while the voices of the main robot characters are provided by Roddy McDowall and Slim Pickens (both uncredited).
The Black Hole is a 1979 American science fiction film directed by Gary Nelson and produced by Walt Disney Productions.
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