Gravity of Black Hole: Explaining its Effects Outside

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SUMMARY

The discussion centers on the nature of gravity in relation to black holes, specifically addressing how gravity is perceived outside a black hole. Jay explains that, from an outside observer's perspective, a black hole never fully forms, and objects falling into it never reach the event horizon. This phenomenon results in the gravity experienced outside being a consequence of the black hole's formation process, rather than a direct influence from within. The conversation emphasizes the role of time and the limitations imposed by the speed of light in understanding these gravitational effects.

PREREQUISITES
  • Understanding of general relativity and its implications on gravity.
  • Familiarity with the concept of event horizons in black hole physics.
  • Knowledge of particle physics, specifically the role of gravions in gravitational interactions.
  • Basic grasp of the relationship between time and gravity as described in Einstein's theories.
NEXT STEPS
  • Research the implications of general relativity on black hole formation and gravity perception.
  • Study the concept of event horizons and their significance in black hole physics.
  • Explore particle physics, focusing on the theoretical existence of gravions and their role in gravity.
  • Investigate the effects of time dilation near massive objects, particularly black holes.
USEFUL FOR

Astronomers, physicists, and students of theoretical physics who are interested in the complexities of black hole mechanics and the nature of gravity.

jay
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Hai
We say all forces can be explained as the exchange of particles.
Thus gravity as the exchange of gravions.Since nothing can travel faster than light how can we experience the gravity of a black hole
outside.
Jay
 
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The answer to your question has to do with with the effect of the gravity on time. Specifically, to an outside observer, the black hole never quite forms in the first place, while anything falling in never quite reaches the event horizon. Putting this all together, the gravity that is felt outside the black hole is from the object becoming a black hole and never quite getting there.
 
Originally posted by jay
We say all forces can be explained as the exchange of particles.
Thus gravity as the exchange of gravions.Since nothing can travel faster than light how can we experience the gravity of a black hole outside.

It's a bit misleading because the notion implicitly involves particles poping in and out of existence everywhere. It's not 'exchange of particles' in the sense of a tennis ball being thrown back and forth.
 

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