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Author Topic:   Starlight Within a Young Universe
cavediver
Member (Idle past 3643 days)
Posts: 4129
From: UK
Joined: 06-16-2005


Message 6 of 57 (366518)
11-28-2006 1:31 PM
Reply to: Message 2 by Taz
11-28-2006 11:03 AM


This makes no sense. If we are below the event horizon, how come we aren't ripped apart by gravitational forces?
Event horizons are independent of any gravitational "force". Around a Solar mass black hole, the tidal forces in the region of the event horizon would be enormous, but this is by no means always the case. Around a hypermassive black hole, the tidal forces at the horizon could be unnoticeable.
Nothing in here makes any sense. Do you even understand what a black hole is?
The black hole in this case is significantly different to the normal layman presentation of a black hole. "this makes no sense" is typically not a good defence against the physics of General Relatvity... very little of it makes sense!
But don't worry, Humphrey's interpretation of his model IS nonsense and hopefully I'll get to some of it before the end of the evening.

This message is a reply to:
 Message 2 by Taz, posted 11-28-2006 11:03 AM Taz has replied

Replies to this message:
 Message 7 by Taz, posted 11-28-2006 2:39 PM cavediver has replied

cavediver
Member (Idle past 3643 days)
Posts: 4129
From: UK
Joined: 06-16-2005


Message 8 of 57 (366539)
11-28-2006 2:59 PM
Reply to: Message 7 by Taz
11-28-2006 2:39 PM


I take his meaning of black hole as it is, an object with its mass so concentrated that its gravitational pull is infinitely strong
Right, and this isn't what Humphrey means. This is a type of universe usually referred to as a black hole cosmology. It is not a black hole that forms as the result of gravitational collapse.
The gravitational "pull" of a black hole only becomes unbounded as you head towards the singularity. For a large enough black hole, you can be well within the horizon yet so far from the sigularity that you wouldn't be aware of the singularity... not yet anyway!

This message is a reply to:
 Message 7 by Taz, posted 11-28-2006 2:39 PM Taz has replied

Replies to this message:
 Message 11 by Taz, posted 11-28-2006 6:30 PM cavediver has not replied

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