Friday, November 2, 2018

black holes - Hawking (blackbody) radiation, emission or absorption


A black body is classically defined as a perfect absorber of radiation. That seems to fit a black hole pretty well. The only remaining question, then, How do we know that Hawking radiation is emission and it is not absorption and black holes slowly evaporate by emitting Hawking radiation?


Black hole


How do we know Hawking radiation is not an explanation of how radiation can be absorbed by a black hole?




No comments:

Post a Comment

classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...