Gravity's Magic

[Dipanjan Maitra]

Hawking in fact argues that *black holes* can disappear thanks to what he
calls 'Hawking Radiation'. It's in that chapter called 'Black Holes Ain't
so Black' of *A Brief History of Time.*

On Thu, May 10, 2012 at 10:49 PM, Keith Davis <kbob42 at gmail.com> wrote:

> If matter is being sucked into black holes, and the universe is expanding,
> the matter must be coming back out somewhere, or new matter is being
> produced, or the matter present must be "thinning out".
>
> Anybody have any answers?
>
>
> On Thu, May 10, 2012 at 11:15 AM, David Morris <fqmorris at gmail.com> wrote:
>
>> > From: Prashant Kumar <p.kumar at physics.usyd.edu.au>
>> >
>> > Subject: Re: Gravity's Magic
>> >
>> > That's what a singularity is. A point in space in which the force due
>> to gravity is infinite.
>>
>> I trust Prashnat knows whereof he speaks, even though the concepts are
>> difficult to follow, probably partly due to the limits of terminology.
>>
>> I've always wondered about the limits of black holes.  I take it some
>> are larger than others (or am I wrong?).  So that implies infinite
>> gravity contained within a physically limited size, right?  I ask,
>> because I've never been able to understand why all the cosmos hasn't
>> been engulfed by the first black hole that popped into existence.  Why
>> isn't the Universe contracting into a black hole instead of continuing
>> to expand?
>>
>> Probably way to complex for a simple answer...
>>
>> David Morris
>>
>
>
>
> --
> www.innergroovemusic.com
>
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