0
Who predicted that black holes emit black body radiation in 1974?
Wiki User
∙ 9y ago
Physicist Stephen Hawking predicted blackbody-like radiation from black holes in 1974, and also Jacob Bekenstein that same year published theoretical work in black hole thermodynamics.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
Who proposed that black holes can evaporate?
Stephen Hawking was the first scientist to suggest that the black holes evaporate. His theory of Black Holes emitting radiation, also termed as Hawking Radiation.Hawking radiation is black body radiation that is predicted to be emitted by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after the physicist Jacob Bekenstein who predicted that black holes should have a finite, non-zero temperature and entropy. Hawking's work followed his visit to Moscow in 1973 where Soviet scientists Yakov Zeldovich and Alexei Starobinsky showed him that according to the quantum mechanical uncertainty principle,rotating black holes should create and emit particles. Hawking radiation reduces the mass and the energy of the black hole and is therefore also known as black hole evaporation. Because of this, black holes that lose more mass than they gain through other means are expected to shrink and ultimately vanish. Micro black holes (MBHs) are predicted to be larger net emitters of radiation than larger black holes and should shrink and dissipate faster.In Hawking Radiation, Virtual particle pairs are constantly being created near the horizon of the black hole, as they are everywhere. Normally, they are created as a particle-antiparticle pair and they quickly annihilate each other. But near the horizon of a black hole, it's possible for one to fall in before the annihilation can happen, in which case the other one escapes as Hawking radiation.
How do scientists know something about black holes?
As you might imagine, it's very difficult to observe black holes. For a very long time, we weren't even sure we _could_. As it happens, there are a few aspects of black holes that make it possible to detect their presence, but their nature prevents us from directly observing what occurs inside the singularity. Since we can't observe them, the main way scientists understand black holes is through mathematics. Karl Schwartzchild first predicted them as one solution to the Einstein field equations at the heart of Einstein's General Theory of Relativity, back in 1915. Later scientists found additional solutions that also pointed toward the existence of black holes, and helped refine our prediction of the behavior of space-time near them. Quantum field theory has been used, as well. One of the best known cases is Dr. Stephen Hawking's prediction, in 1974, that black holes should act like a black body, radiating energy in an amount inversely proportional to the surface gravity of the black hole. The amount of 'Hawking radiation' produced by a mass the size of a star ends up being very small. A black hole with the mass of our sun would emit only 9 × 10−29 watts.
When was Black As He's Painted created?
Black As He's Painted was created in 1974.
Who is the father of black hole theory?
Quantum singularities (more commonly refered to as black holes) are in fact, infinitely dense raptures in the fabric of space. Q2+(J/M)2 ≤ M2 is a very common equation to define black holes in space. Some scientists believe that through black holes and the use of anti - gravity we can create wormholes, which could allow instantaenous access to anywhere in the universe.
What is the explosion of a black hole called?
I don't know of any specific term used to refer to a black hole explosion. Note: The concept of an exploding black hole is still hypothetical. In 1974, Stephen Hawking realized that, owing to quantum effects, black holes should emit particles with a thermal distribution of energies - as if the black hole had a temperature inversely proportional to its mass. In addition to putting black-hole thermodynamics on a firmer footing, this discovery led Hawking to postulate 'black hole explosions', as primordial black holes end their lives in an accelerating release of energy. However, these explosion merely describe a marked increase (or burst of energy) in the emission of Hawking radiation; and the speed of such evaporation is still very theoretical. The final stage of the evaporation for a black hole has been described to proceed so rapidly that it would end in a tremendous explosion. How powerful this explosion would be depends on how many different species of elementary particles there are. If, as is now widely believed, all particles are made up of perhaps six different kinds of quarks, the final explosion would have an energy equivalent to about 10 million one-megaton hydrogen bombs. On the other hand, an alternative theory of elementary particles put forward by R. Hagedorn of the European Organization for Nuclear Research argues that there is an infinite number of elementary particles of higher and higher mass. As a black hole got smaller and hotter, it would emit a larger and larger number of different species of particles and would produce an explosion perhaps 100,000 times more powerful than the one calculated on the quark hypothesis. Hence the observation of a blackhole explosion would provide very important information on elementary particle physics, information that might not be available any other way.
Who proposed that black holes can evaporate?
Stephen Hawking was the first scientist to suggest that the black holes evaporate. His theory of Black Holes emitting radiation, also termed as Hawking Radiation.Hawking radiation is black body radiation that is predicted to be emitted by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after the physicist Jacob Bekenstein who predicted that black holes should have a finite, non-zero temperature and entropy. Hawking's work followed his visit to Moscow in 1973 where Soviet scientists Yakov Zeldovich and Alexei Starobinsky showed him that according to the quantum mechanical uncertainty principle,rotating black holes should create and emit particles. Hawking radiation reduces the mass and the energy of the black hole and is therefore also known as black hole evaporation. Because of this, black holes that lose more mass than they gain through other means are expected to shrink and ultimately vanish. Micro black holes (MBHs) are predicted to be larger net emitters of radiation than larger black holes and should shrink and dissipate faster.In Hawking Radiation, Virtual particle pairs are constantly being created near the horizon of the black hole, as they are everywhere. Normally, they are created as a particle-antiparticle pair and they quickly annihilate each other. But near the horizon of a black hole, it's possible for one to fall in before the annihilation can happen, in which case the other one escapes as Hawking radiation.
How do scientists know something about black holes?
As you might imagine, it's very difficult to observe black holes. For a very long time, we weren't even sure we _could_. As it happens, there are a few aspects of black holes that make it possible to detect their presence, but their nature prevents us from directly observing what occurs inside the singularity. Since we can't observe them, the main way scientists understand black holes is through mathematics. Karl Schwartzchild first predicted them as one solution to the Einstein field equations at the heart of Einstein's General Theory of Relativity, back in 1915. Later scientists found additional solutions that also pointed toward the existence of black holes, and helped refine our prediction of the behavior of space-time near them. Quantum field theory has been used, as well. One of the best known cases is Dr. Stephen Hawking's prediction, in 1974, that black holes should act like a black body, radiating energy in an amount inversely proportional to the surface gravity of the black hole. The amount of 'Hawking radiation' produced by a mass the size of a star ends up being very small. A black hole with the mass of our sun would emit only 9 × 10−29 watts.
When was Caution Radiation Area created?
Caution Radiation Area was created in 1974.
What actors and actresses appeared in Black Girls - 1974?
The cast of Black Girls - 1974 includes: Gem Black
What are the ratings and certificates for Black Starlet - 1974?
Black Starlet - 1974 is rated/received certificates of: USA:R
What are the ratings and certificates for Black Eye - 1974?
Black Eye - 1974 is rated/received certificates of: USA:PG
What are the ratings and certificates for The Black Connection - 1974?
The Black Connection - 1974 is rated/received certificates of: USA:R
When was Black Slate created?
Black Slate was created in 1974.
What are the release dates for Good Times - 1974 Black Jesus 1-2?
Good Times - 1974 Black Jesus 1-2 was released on: USA: 15 February 1974
When was Black Smith created?
Black Smith was created in 1974-11.
What are the ratings and certificates for Solprene Rubber and Carbon Black - 1974?
Solprene Rubber and Carbon Black - 1974 is rated/received certificates of: Belgium:KT
When was The People of the Black Circle created?
The People of the Black Circle was created in 1974.
