Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!


  1. Mar 8, 2006 #1
    What do you think about it?

    Big Bang was the result of explosin of a super super masive Blackhole,

    details: According to one of the theories, this universe will end up with a black hole. So if we consider that, in the long future nothing would be left inside the universe other than the black hole than we can say that the tempreture outside the black hole is absolute zero or in other words type of antrophy because there is NO radiation (radiation appears in excess of energy)the main thing which makes me confident in saying no radiation is the rate of evaporation of a black hole is very low comparing to its energy consumption so the radiation will stop before its entirely evaporated, & nothing else to give energy to the black hole so the atoms will lose all their energy and will finally lose the bonds between each and other, This process of lossing the bonds can act as an explosion (Big Bang) because black holes are extreamly compact and have a great potential energy, so when the bond is lost the atom will be thrown outside with a very high velocity (expansion of universe) and this velocity results to the kinetic energy which gives the atom a very high tempreture & now comes the cosmic cooling and so on.........
  2. jcsd
  3. Mar 8, 2006 #2
    Which is not proven.

    There is no proof that black holes don't radiate. There is a possibility of Hawking Radiation and other forms of energy which escape black holes, so it will be tough for the black hole to capture all energies.

    Actually, a black hole of any size will radiate. The consumption rate depends on the surrounding. If the surroundings are nil, then the evaporation rate is greater than the accretion rate.

    Also, it is not known to us what happens to the value for the Gravitational Constant for very large black holes with a mass over 10^50 kg.

    Which would give us Hawking Radiation, or the Microwave Background Radiation. However, keep in mind, for the power output of such an enormous black hole of a mass greater than 10^50 kg to reach such a power output, the Gravitational Constant must be reduced, assuming that h and c must not change.

  4. Mar 8, 2006 #3
    Firstly I would like to thankyou for your reply and these are my answers;

    In the case of Black holes as the end of the universe, you are right,

    In the second part;As the B.H get larger in size the event of horizon will change and after a certain level it will have a rapid increase in its size and gravitational attraction because of the huge changes in the overall space time curvature of the universe.

    What you have mentioned about the rates of consumption of energy and radiation are in a normal state but in a point where nothing is out there to give energy to the black hole ( an antrophy) then the rates will probably change, dont you think so? or in other words there is no energy left and evrything is converted to matter and the atomic bonds will be broken down because the electrons and proton's motions are all suspended.

    There is no need of gravitational constant change because even a black holes gravitational curve is not the same all through it and at the edges the matter can escape with out being influenced by the gravity. (chambridge relativity website has the detailed graphs to prove the data)

    So the values of h & c are still the same.

    Yes, there will be some hawking and microwave radiations too but no just that, That can be called the cosmic bacground radiation.
  5. Mar 9, 2006 #4


    User Avatar
    Science Advisor
    Gold Member

    A black hole is not composed of atoms.
  6. Mar 9, 2006 #5
    So where did the space time wrapture came from?
  7. Mar 9, 2006 #6


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Matter (atoms) that fall into a black hole are crushed into a single point (singularity). The point is a new thing altogether with its own mass/physical characteristics (the atoms are essentially destroyed...adding their mass to the singularity)
  8. Mar 9, 2006 #7
    Very interesting. It makes pretty good sense but there really is no proof. Intesting theory though.

    I wonder though, where do the particles go within the black holes? Some scientists think black holes may even lead into other universes. So I wonder whether the multiverse is an endless shuffle of energy between universes. Perhaps this universe may become a giant black hole but then each black hole may spit out matter from other universes recycling energy as particles transfer from one universe to the next.
  9. Mar 10, 2006 #8
    As one of the friends has said about the atoms beign destroyed, what are they converted to? ( for the addition of mass in the singularity ) are photons?
  10. Mar 10, 2006 #9


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Converted to the singularity itself. The singularity is a zero-dimensional object (a point) so it's not made of anything else. Modern physics can describe the effect of a singularity on the rest of the universe (for example, how other objects will orbit it or fall into it, how space and time act around it, etc.) but physics can't yet fully describe the singularity itself (the mathematics of physics don't work for the singularity). It remains a mystery.
  11. Mar 11, 2006 #10
    Well, It still seems to be puzzeling for me,
    I don't really get it, when the singularity is a zero dimensional object and made up of crushed atoms do we mean that there are the quarks (the simplest possible unit of matter). But you said its not made up of matter as well. So what does this mean?????

    Can we say that a black hole can be described as a point of singularity too?

    If so than it does contain matter because it was formaed by the presure of the core of the dead star. than there is the matter which can give the point a gravity and density.

    I would be thankful if you clear this dark side of my knowledge ( Iam 15 years old and yet a lot that I still don't know so please describe your answer in a simple way) THANKyou
  12. Mar 12, 2006 #11


    User Avatar
    Science Advisor
    Gold Member

    Think instead of the various forces at work that conspire to do weird and unspeakable things to atoms and the very particles that compose them. The general term for this is condensed matter. We know, for instance, that your run of the mill atom ceases to exist under the immense gravity of a white dwarf star. We also know that matter further decomposes under the even more intense gravity of a neutron star. It is also thought matter suffers further indignities when subjected to the even more intensely intense gravity of a strange star. And finally, even quarks give up the ghost when matter is crushed down to the schwarzschild density limit. Try googling these terms and see what you think.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook