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

Can I be a black hole?

  1. Oct 16, 2007 #1
    What is the condition for the schwarzschild radius to form a black hole?
    Well, for example I have 65 Kg, so my Schwarzschild radius is 9.62x10^26 m
    Why am I not a black hole?
  2. jcsd
  3. Oct 16, 2007 #2
    You might want to check your math.
  4. Oct 18, 2007 #3
    you are not dense enough.
  5. Oct 27, 2007 #4
    Check out the link below concerning a certain fictional "human black hole."

    http://en.wikipedia.org/wiki/Chunk_(comics [Broken])
    Last edited by a moderator: May 3, 2017
  6. Oct 27, 2007 #5
    Your math is wrong. Your Schwarzschild radius should be extremely small. You would be a black hole only after all your mass was squeezed into that radius.
  7. Oct 27, 2007 #6
    I think you should check your maths.

    Schwarschild radius: [tex]r_{s}[/tex]=[tex]2Gm\overline{c^{2}}[/tex]

    substitute the following values:

    [tex]r_{s}[/tex] is the Schwarzschild radius (you want to calculate)

    [tex]G\ =\ 6.673(10)\ \times\ 10^{-11}\ m^{3} kg^{-1} s^{-2}[/tex]

    m is your mass, assume = 70 Kg

    [tex]c\ =\ 2.99792458\ \times\ 10^{8}\ m\ s^{-1}[/tex]

    hence [tex]r_{s}[/tex]= 1.0394599353664114117056783269603e-25 m

    meaning your radius should be approximately as small as one part in ten million million million million of a meter!
    Last edited: Oct 27, 2007
  8. Oct 28, 2007 #7
    You will certainly become a black hole if you compress yourself upto Schwarzschild radius. As said earlier your math is wrong. But one condition is again missing. To be a black hole you should compress the energy of your body within the region of Schwarschild radius.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook