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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order

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InvisibleDiglottic_Sun
Stranger in astrange land


Registered: 12/15/07
Posts: 35
black holes
    #8110566 - 03/06/08 11:25 AM (16 years, 2 months ago)

does anyone know how general relativity predicts black holes?

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OfflineCoaster
Baʿal
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Registered: 05/22/06
Posts: 33,501
Loc: Deep in the Valley
Last seen: 12 years, 7 months
Re: black holes [Re: Diglottic_Sun]
    #8111170 - 03/06/08 02:07 PM (16 years, 2 months ago)

ya cuz there the more mass u have the more gravity
so at a certain critical mass the gravity is so high the atoms smush 2gether so closesly that it forms a singularity


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InvisibletrendalM
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Registered: 04/17/01
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Re: black holes [Re: Coaster]
    #8111430 - 03/06/08 03:02 PM (16 years, 2 months ago)

Quote:

Coaster said:
ya cuz there the more mass u have the more gravity
so at a certain critical mass the gravity is so high the atoms smush 2gether so closesly that it forms a singularity




Actually, a singularity is the one thing you can't have in general relativity. That's part of the reason why relativity and quantum mechanics aren't compatible with each other - you need QM to describe matter compressed to such volumes, but relativity is completely unable to tell you anything about the gravity under those conditions.

General relativity predicts black holes because it describes the warping of spacetime by gravity. That causes an extreme form of the doppler shift on any light trying to escape the black hole.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order


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