black hole


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black hole

1. A theoretical object in space, the mass of which is so great and dense that nothing, not even light, can escape its gravitational pull. Black holes have always fascinated me. If even light can't escape them, who knows what they might really contain?
2. Any place, region, or thing in which something (items, people, etc.) are irretrievably lost. My desk is just a black hole of papers and things, and I can never find anything in it! Alzheimer's is a terrible disease, like a black hole in one's mind.
3. A prison cell or area of confinement, especially that which is in notoriously poor or hostile condition. Refers specifically to the so-called "Black Hole of Calcutta," a prison in West Bengal where, in 1756, 146 Europeans were said to have been imprisoned and all but 23 suffocated overnight. Sebastian was sentenced to 30 days of solitary confinement in a tiny black hole, where the only light came from the slot for his food.
See also: black, hole

black hole

1. A wretched prison cell or other place of confinement. For example, The punishment is solitary confinement, known as the black hole. This term acquired its meaning in 1756 with the event known as the Black Hole of Calcutta. On the night of June 20, the ruler of Bengal confined 146 Europeans in a prison space of only 14 by 18 feet. By morning all but 23 of them had suffocated to death. Although historians since have questioned the truth of the story, it survives in this usage.
2. A great void or abyss. For example, Running a single small newspaper ad to launch a major campaign is useless; it amounts to throwing our money into a black hole . This usage alludes to a region, so named by astronomers, whose gravitational field is so intense that no electromagnetic radiation can escape from it. [Late 1970s]
See also: black, hole
References in periodicals archive ?
Space objects have to be close to the black hole to feel its gravity pull.
Until now all previously known black holes have been found in multiple star systems, orbiting a companion star.
With NASA's James Webb Space Telescope set to be launched next year, the number of black hole discoveries will increase, helping us identify anomalies in the findings and conclusively understand black holes.
If this correlation holds up, then whenever we find a black hole with this spin rate, we might be able to say that it's the product of a merger.
Ingesting a star causes a brief, sharp flare that trails off slowly as the black hole finishes its "meal.
But if the black hole twirls too fast, the singularity becomes exposed.
With recent advancement in observational research, it has been revealed that many of galaxies contain a supermassive black hole at their centers.
The results described above in terms of the Mach principle, the observations of the universe, and the Einstein general theory of relativity strongly imply that the universe is a Schwarzschild black hole, which is an extremely supermassive fully expanded black hole with a very big size and thus a very low density and temperature.
For the first time the researchers have discovered that a strong X-ray pulse is emitting from a giant black hole in a galaxy 500 million light years from Earth.
The researchers say their discovery will increase the understanding of how gas behaves before falling on to a black hole as it feeds and develops.
The "kick" that occurs during the collision could knock the black hole clear out of its galaxy.
Full of surprises, amusing, explanatory text, fun illustrations and dramatic space/star photography, "A Black Hole is NOT a Black Hole" is exciting space/time education at its very best.
Black hole pairs can be formed in a few different ways.
Now, a team has measured the plane-of-sky motions of this pair for the first time, making it the first visual black hole binary.
TEHRAN (FNA)- A new kind of black hole has been found at the centre of the Milky Way - a find that may help explain the evolution of the phenomena.
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