noun[mass noun] Physics
Electromagnetic radiation which, according to theory, should be emitted by a black hole. The radiation is due to the black hole capturing one of a particle-antiparticle pair created spontaneously near to the event horizon.
- The Second Law of Thermodynamics requires that black holes emit so-called Hawking radiation, which can exert a sort of ‘buoyant force’ on nearby matter.
- Stephen Hawking showed that the entropy of matter absorbed by a black hole is stored in the surface area of its event horizon and is released back into the universe as the black hole decays by Hawking radiation.
- In simple terms, what is now known as Hawking radiation is produced when quantum fluctuations give rise to pairs of short-lived virtual particles near the event horizon.
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