Hawking radiation from a black hole?

In summary, Stephen Hawking's theory suggests that black holes emit thermal radiation, even though light cannot escape their intense gravitational pull. This radiation actually comes from the intense gravitational field just outside the event horizon, and is not a result of the black hole itself. This phenomenon is possible due to the centrifugal forces at play.
  • #1
mAMBOkING
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In his theory, Stephen Hawking suggests that a black hole will give off thermal radiation. Radiation is light, so how can light escape the gravity of a black hole, especially originating from one? The only way I could see this was that if radiation were traveling beyond the speed of light, but that's not possible, right?
 
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  • #2
welcome to pf!

hi mAMBOkING! welcome to pf! :wink:

it doesn't come from the black hole …

it comes from the intense gravitational field just outside the event horizon :smile:
 
  • #3
mAMBOkING said:
In his theory, Stephen Hawking suggests that a black hole will give off thermal radiation. Radiation is light, so how can light escape the gravity of a black hole, especially originating from one? The only way I could see this was that if radiation were traveling beyond the speed of light, but that's not possible, right?

Yess is possible by the centrepetal forces imself d'ont you think ? no
 

1. What is Hawking radiation?

Hawking radiation is a type of radiation that is predicted by physicist Stephen Hawking to be emitted by black holes. It is a form of thermal radiation, meaning it is made up of particles that carry energy away from the black hole.

2. How does Hawking radiation form?

Hawking radiation is formed through a process called quantum tunneling. In this process, particles and anti-particles are created near the event horizon of a black hole. The particle with negative energy falls into the black hole, while the particle with positive energy can escape and appear as Hawking radiation.

3. What is the significance of Hawking radiation?

Hawking radiation is significant because it suggests that black holes are not completely black, as previously thought. It also has implications for the ultimate fate of black holes, as they are predicted to eventually evaporate due to the emission of Hawking radiation.

4. Can Hawking radiation be observed?

Currently, Hawking radiation has not been directly observed, as it is very weak and difficult to detect. However, scientists are working on experiments and techniques to potentially observe this phenomenon in the future.

5. How does Hawking radiation affect the size of a black hole?

Hawking radiation causes black holes to lose mass over time, eventually leading to their complete evaporation. As the black hole loses mass, its size decreases. This process is very slow for large black holes, but becomes more rapid as the black hole gets smaller.

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