From Nature: Black holes 'do not exist'

michael
michael
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hola, how's my avatar? and

hola, how's my avatar?

and what are the signatures? show me an example if possible

michael
michael
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cool ,i can answer a

cool ,i can answer a question, the growing thing, its really quite simple, black dont grow, they shrink, their own mass shrinks them untill there is nothing left, they just collaps on themselves

michael
michael
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and the infinate time thing,

and the infinate time thing, once u think about it, "time" is something we record, so once we are dead and gone, there technically is no longer any "time". but in other respects, yes, there is infinate time, but the black hole can still change, that is how time is measured and known to exist, the fact that things change. so if the black hole does not change, then it is in its own world of time. hehe, im only 15 and i still have a decent understanding of most paradoxes and space theories

michael
michael
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*for sir ulli's last

*for sir ulli's last post*

but the mass of a black hole does not change, the black hole is just of a large size which means the mass is further distributed, making its gravational pull weaker

michael
michael
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hehe i talk alot

hehe i talk alot

gravywavy
gravywavy
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... what are the signatures?

Message 9922 in response to message 9917


... what are the signatures? show me an example if possible
anything that appears at the foot of every posting you make is your signature. My sig is my name. If you look back up this thread, where you see the same person posted several times and the last few lines is the same, that is likely their sig.

More info here about sigs, in case you haven't found it already.

~~gravywavy

gravywavy
gravywavy
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cool ,i can answer a

Message 9923 in response to message 9918

cool ,i can answer a question
yeah! and it is a cool answer but there is more to it than that.
the growing thing, its really quite simple, black dont grow, they shrink, their own mass shrinks them untill there is nothing left, they just collaps on themselves

Left to themselves yes they do.

When more stuff falls in, they get more massive. Getting heavier is one form of 'growing'.

In addition, as they get more massive, the so-called event horizon grows: this is the space within which nothing can get out. So even though all the mass is concentrated at a spot, the hole is quite large: we usually think of the hole as consisting of everything inside the event horizon, not just the massive centre.

In both senses, when they eat other stuff they grow as a result.

Odd really: with all other holes, when you add stuff the hole gets smaller...

Finally, when you add quantum mechanics (and nobody is sure the correct way to do that) it seems that black holes either never quite form (they get stuck in the state just before being black holes) or if they do form, they can also spit stuff out again, which of course cannot happen on the original Einstein theory. If they do exist, the most massive black hole would last 'only' 10^138 years or so, so no need to rush to see one.

~~gravywavy

michael
michael
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thank you for telling me

thank you for telling me that, im thankful for being a bit wiser

michael
michael
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although, in truth, from what

although, in truth, from what i have read "black holes" arnt really "holes" but planets, stars, whatever, that are just really dence, and because of that, the gravity kind of pulls and shifts whatever is effected and it never really touches the surface, you can think of it as a star that is so dence that its own light cannot escape the grav field. but i have also read that there is a thing called "white holes", these are the other side of the black holes (if they are indeed holes) for every hole has another open side, if they do not, then they are a pit.

Oliver
Oliver
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RE: although, in truth,

Message 9926 in response to message 9925

Quote:
although, in truth, from what i have read "black holes" arnt really "holes" but planets, stars, whatever, that are just really dence, and because of that, the gravity kind of pulls and shifts whatever is effected and it never really touches the surface, you can think of it as a star that is so dence that its own light cannot escape the grav field. but i have also read that there is a thing called "white holes", these are the other side of the black holes (if they are indeed holes) for every hole has another open side, if they do not, then they are a pit.

Dear michael,
take your time and click through this page:
http://imagine.gsfc.nasa.gov/docs/science/advanced_science.html

When you´re familiar with the basics, come back and ask again.
"White holes" were a speculation decades ago when physicist found out that the maths of Einsteins theory failed to explain the physics of extraordinary strong grav fields. These questions must be answered by a new theory which combines the theory of relativity and quantum theory. But this new theory is not yet finished. (I´think Ben Owen is working on it, so maybe next year or so ;-) )


Es gr

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