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

Explaining blackholes dark matter ?

  1. Dec 25, 2008 #1
    Ok so i don't know squat about either subject, so blame Nova for this post. The show was talking about reaching absolute zero and einstine's conensate theory. As they talked about using intense magnetic fields and shot light waves through these near zero gas clouds causing light to slow. one scientist said while they can get close to zero it would take a lab the size of the universe to get to absolute zero. It came to my mind that this may explain the event horizon of a black hole at its very center and or dark matter/ lost matter/ in the form of atomic condensate of undiferentiated mass at asoulte zero. Anybody have some hard (theory) science to speak from on the subject.
    In the program the near zero condensates they did achieve did have some interesting properties like causing light to slow and act like it was traveling through a field of ballistics gel only it would speed up when it got to the other side. very cool stuff ! pardon the pun.
  2. jcsd
  3. Dec 25, 2008 #2

    George Jones

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    A black hole is a vacuum solution to Einstein's equations of general relativity.
    Normal matter, e.g., cooled rubidium atoms, is used to make the condensate, but theoretical and experimental indicate that dark matter isn't made from normal matter.
    This is an effective speed of light, not the speed of photons. See

    https://www.physicsforums.com/showthread.php?p=899393#post899393 [Broken].
    Last edited by a moderator: May 3, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook