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Author Topic: black holes  (Read 3352 times)

Offline ukmicky

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black holes
« on: 24/12/2005 00:25:32 »
When you consider the distance to most black holes,is it really possible for us to understand what they are or how they work. Could there be important things happening which we cant see as their effects donít visually cause much impact from the earth, But which could completely change are ideas on what a black hole really is and what they do.
 
But the main question is how do we know that black holes consume what they attract? is it really possible to weigh a black hole. Could they be like a giant universal recycling  machine ripping things up and throwing it all straight back out again as energy,or something new with properties that we haven't seen and therefore donít understand yet like WIMPS,Non-baryonic matter




                Michael                                      
« Last Edit: 27/12/2005 17:00:57 by ukmicky »


 

Offline DoctorBeaver

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Re: black holes
« Reply #1 on: 27/12/2005 19:46:26 »
Most of what we "know" about black holes comes from theories that are only just begining to be tested by observation. We can now see things that behave in the way we predict holes should.
Black holes cannot actually be weighed, but we can calculate their mass by the effect they have on other objects such as stars. If a star is close enough to a black hole for the 2 to form a binary system, the orbital periodicity can be used to calculate the gravitational attraction & hence the mass.
It's very unlikely that black holes are the source of dark matter. Dark matter is theorised to be a possible cause of galaxies behaving they way they do. There is not enough visible matter in galaxies to hold them together. Therefore, it is surmised that dark matter provides the extra gravity that is required. If dark matter is affected by gravity then it could not escape from a black hole.
 

Offline DocN

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Re: black holes
« Reply #2 on: 29/12/2005 21:59:38 »
We have never seem a blackhole but that doesn't mean that such a cosmic construct does not exist.  Blackhole study appears to be in the forefront of physics research and study but equally interesting for me, is the possiblity of "whiteholes" exisiting with opposite characteristics and the part they may play in cosmic evolution.
DocN
 

Offline Ray hinton

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Re: black holes
« Reply #3 on: 05/02/2006 21:37:40 »
MICHAEL,
YOU HAVE GOT THIS THING ABOUT BLACK HOLES,ARENT YOU GETTING ENOUGH OR SOMETHING,I CAN SEND YOU A COUPLE OF PHONE NoS IF YOU LIKE,OR MAYBE A BOOK OR TWO !!!!                      

RE-HAB IS FOR QUITTERS.
 

Offline tony6789

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Re: black holes
« Reply #4 on: 06/02/2006 15:53:12 »
It is all guess work

- Big T
 

Offline ukmicky

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Re: black holes
« Reply #5 on: 06/02/2006 18:05:39 »
quote:
YOU HAVE GOT THIS THING ABOUT BLACK HOLES


I wouldn't disagree with that. of all the things in the universe they have still got to be one of the most mysterious:)

Michael
« Last Edit: 06/02/2006 20:20:40 by ukmicky »
 

Offline Andrew K Fletcher

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Re: black holes
« Reply #6 on: 06/02/2006 20:03:46 »
Holly from 'Red Dwarf' when asked why she hadn't noticed a black hole, replies: 'The thing about black holes is, they're black. And the thing about space - the colour of space - yer basic space colour - is... it's black.') However, one was found  a while back, http://www.mainlesson.com/display.php?author=marshall&book=island&story=calcutta












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Offline Ray hinton

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Re: black holes
« Reply #7 on: 06/02/2006 22:56:13 »
ive never been to india,that might just be the thing that gets me to go there,sounds a fun place,bit like eddies bar,sennelager.

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Offline tony6789

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Re: black holes
« Reply #8 on: 08/02/2006 14:36:30 »
the universe is a great mysery that is about all we know. Consider this: Pretend that all the knowledge of the universe is the length of the world. Now our knowledge about it is about the size of California

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Re: black holes
« Reply #8 on: 08/02/2006 14:36:30 »

 

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