Black hole

Discussion in 'Astronomy, Exobiology, & Cosmology' started by timojin, May 27, 2016.

  1. DaveC426913 Valued Senior Member

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    OK, but how would you use it, in a scientific context? How is it possible to answer the OP's question about purpose without steering him awry?
     
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  3. DaveC426913 Valued Senior Member

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    Black holes certainly have a mass associated with them. It can be measured, and - while TG has an atypical way of saying it - yes, that mass results in a highly curved spacetime.

    As for density, that's a bit trickier.

    It doesn't really make sense to calculate density as mass over volume of the event horizon. While we tend to think of the event horizon as the outer limit of the BH, that's erroneous. The EH is not a physical thing; it is merely a radius at which light cannot escape.

    The singularity at the centre of a BH is where the mass is. And its nature currently beyond our models (that's is literally what singularity means). Our models naively say that the density at the centre of a
    BH should be infinite (any amount of mass, compressed to effectively zero volume will have an infinite density), but we don't really expect that this is the case. We acknowledge that our models simply break down at this point.
     
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  5. wegs Matter and Pixie Dust Valued Senior Member

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    Every thing has a material purpose, without a black hole's existence, who knows...maybe the universe would lose its balance if black holes didn't ''exist.'' From where we sit, it seems that their functionality serves no viable "purpose", but we can't know this with certainty.
     
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  7. DaveC426913 Valued Senior Member

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    Well, I disagree with every single word you said, but that's the beauty of open dialogue.

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  8. wegs Matter and Pixie Dust Valued Senior Member

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    If something exists, it must have some variance of functionality. Or is it only how we perceive the functionality that makes it purposeful?
     
  9. timojin Valued Senior Member

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    Are you not exaggerating . The purpose of a solar panel is to collect energy from the sun convert it to electrical energy.
    Other the purpose of Hemoglobin is to transport oxygen to the cell and remove carbon dioxide from the cell Do you want some more ?
     
  10. paddoboy Valued Senior Member

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    Speaking of BH density is not really smart or logical: Reason being is that when any mass is squeezed to and beyond its Schwarzchild radius, further collapse is compulsory, which means that no force known in existence can stop further collapse to Singularity.
    Obviously Uranium or any other element is not squeezed to its Schwarchild radius.
    Presumably the highly intense light you are referring to is that generally seen in association with BH candidates......This is simply because the BH is increasingly spiralling in matter at ever increasing speeds, even approaching "c"

    The above is obviously a confused statement, and stems partly from what the god has been told previously.
    Density of any BH is not really applicable for the reasons stated: All the BH is, is really just critically curved spacetime with the mass residing at the Planck/quantum level which we refer to as a singularity, simply because our laws of physics and GR do not apply there.

    Also as discussed with other anti mainstream advocates in the past, a BH can logically be inferred to have three properties: They are Mass, Charge and Angular Momentum:
    Charge and angular momentum is negated over time, but the mass [probably in some unknown exotic form at the level where our laws and GR fail us] remains but also possibly negated via the theoretical process we call Hawking Radiation.
    Which effectively means that over the lifetime of the Universe, all BH 's will evaporate.
     
  11. DaveC426913 Valued Senior Member

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    18,959
    Solar panels are designed and engineered by humans.

    I should have been more clear and said purpose is not a word used in the natural sciences.

    Hemoglobin is part of a complex living system that has evolved, where the entire system is dependent on each subsystem functioning.
    The primary function of Hemoglobin in keeping that system going is to transport oxygen, and I grant that - in the context of a complex, interdependent, living system - one could say it has a purpose - but it risks drifting into intelligent design territory.

    Black holes were not designed by anyone, nor are they part of any evolved living system.

    The universe does not operate like a living system. Objects in it do not have purposes.
     
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  12. timojin Valued Senior Member

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    I can see, you are talking from an non believer or atheist standpoint. But at the end of the creation come man, where he believes things had to happen so he can appreciate the organized system because cause and effect.
     
  13. timojin Valued Senior Member

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    You have jumped to conclusion my post does not have anything to do with god .
    I wanted to hear the different points , perhaps I can learn something beside the standard hand waving
    You and other expressed your ignorance by stating the Black hole have mass , density were god posted it is not so, I admit of my ignorance , I am looking for some sense within my thinking .
     
  14. paddoboy Valued Senior Member

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    As I have told you, a BH does have mass, along with possibly two other properties of spin and charge.
    As usual, you are not questioning critically or to make sense, you simply are trying to find an opening or niche, where you are able to slip and/or handwave in your mythical deity of choice.
     
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  15. timojin Valued Senior Member

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    [QUOTE="As usual, you are not questioning critically or to make sense, you simply are trying to find an opening or niche, where you are able to slip and/or handwave in your mythical deity of choice.[/QUOTE]

    Please stop analyzing my brain
    I am interested in our galaxy in its content , and one of the big object is the BB as I posted "What does the black hole does " WHat does do to the galaxy, do we know it or not .
    I assume we don't know much, that is fine , that is what science is all about to reveal the unknown.
    I am also entitle learn the facts and make up my opinion and share then submitted to scrutiny.
     
    Last edited: May 29, 2016
  16. origin Heading towards oblivion Valued Senior Member

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    Good luck.
     
  17. The God Valued Senior Member

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    Can anyone get this insanity stopped ? I have failed to educate paddoboy on this.
     
  18. The God Valued Senior Member

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    3,546

    No, it is not. It is the correct statement as per mainstream.
    It is just that it is beyond your comprehension level. Stick to poposcience, thats for you.
     
  19. The God Valued Senior Member

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    Well....

    Even after keeping me on ignore, your dirty habit of peek a boo has not gone yet.....
    You and Physbang (That PHD), both of you have to peek and see what I have written, why ?
     
  20. The God Valued Senior Member

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    I am sure, the use of word 'beauty' is inspired by the wegs Avatar photo....you DaveC426913 !! Pl throw some light on these digits 426913...I understand only a pair of them.
     
  21. paddoboy Valued Senior Member

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    The only insanity is that shown by your own fairy tale claims, and consequent whinging when taken to task over them.
    Do better.

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    Actually it is basic BH cosmology accepted by all reputable physicists and cosmologists.
    A BH can have three properties of mass, angular momentum and charge, despite your previous denials.
    Also GR tells us that once the Schwarzchild radius is reached further collapse is compulsory, again in spite of your denials and objects....
    Thirdly speaking of BH density is meaningless, since the mass that makes up the BH would be lying at or below the quantum/Planck level, although in an unknown probable exotic state, surmising that the infinities that a Singularity may lead to, do not exist.
    Of course as usual all my claims have been referenced many times in the past and also supported by professionals that myself and tashja have received to try and alleviate your ignorance. In that we have failed.
    Of course you have referenced nothing to support anything you have said, which subsequently means they are baseless, unsupported claims.
    Again, do better.
     
  22. DaveC426913 Valued Senior Member

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    I am talking from the science viewpoint, on a science forum, in a science subforum.
    If you want to talk theism, it behooves you to do it in the theism subfora.

    We would not need to second guess your motives if you were forthright.
    You post in the astronomy subforum, then tell us you're interested in theist/believer responses.
    Science is silent on theism/believage and purpose.

    You got the facts; you're asking for something different.

    Ask in the correct forum and you may get the answers you're looking for.
     
  23. timojin Valued Senior Member

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    What makes you think that. I have asked question in respect of scientific information . Science is science , the information should be available to any group. Science does not belong to atheists only. there are many believer who cooperate in scientific field, so please don't coach me how and what should I think.
    I believe this is a question for science " I am interested in our galaxy in its content , and one of the big object is the BB as I posted "What does the black hole does " WHat does do to the galaxy, do we know it or not" .
     

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