Can Black Holes Truly Absorb All Matter and Energy?

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Discussion Overview

The discussion centers around the nature of black holes, specifically whether they can truly absorb all matter and energy that comes near them. Participants explore theoretical implications and experimental evidence related to black holes and their interactions with energy and matter.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants propose that black holes act as perfect black bodies, suggesting they absorb everything that crosses their event horizon.
  • Others question whether it is experimentally proven that black holes absorb all matter and energy, indicating a need for empirical evidence.
  • A later reply asserts that while experiments align with general relativity, which posits that nothing escapes a black hole, there is no alternative theory that contradicts this observation.
  • One participant emphasizes the lack of definitive proofs in physics, suggesting that the understanding of black holes is still largely theoretical.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the empirical evidence for black holes absorbing all matter and energy, indicating that multiple competing views remain without a consensus on the matter.

Contextual Notes

Limitations include the dependence on theoretical frameworks like general relativity and the absence of alternative theories that could provide different insights into black hole behavior.

Shailesh Pincha
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Black hole is considered an almost ideal black body by being a perfect black hole. But does it ideally absorb everything coming in the vicinity of its impact? Is it really possible for anybody to either ideally absorb or ideally radiate energy?
 
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Shailesh Pincha said:
But does it ideally absorb everything coming in the vicinity of its impact?
Everything that comes so close that it crosses the event horizon cannot come back, yes.
Shailesh Pincha said:
Is it really possible for anybody to either ideally absorb or ideally radiate energy?
Yes.
 
mfb said:
Everything that comes so close that it crosses the event horizon cannot come back, yes.Yes.
Is it experimentally proven or something like that which proves that black hole absorbs everything or it is just theorised?
 
There are no proofs in physics.
Experiments are in very good agreement with general relativity, a framework which does not allow things to escape. There is no alternative theory that would allow things to escape without being in conflict with observations.
 
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