Jump to content

White hole: Difference between revisions

From Wikipedia, the free encyclopedia
Content deleted Content added
rv strange edit
Noz92 (talk | contribs)
No edit summary
(One intermediate revision by the same user not shown)
Line 1: Line 1:
The [[Swartzchild_Metric]] (below) reviels a negative squareroot solution, as well as a positive one for its geometry.
In [[astrophysics]], a '''white hole''' is a postualed celestial body that spews out matter, in essence an anti-[[black hole]], or the [[time reversal]] of a black hole. White holes have not been proved or seen and must have a sister black hole. White holes may violate the [[second law of thermodynamics]].
<p>
<u>Swartzchild Metric</u>
<br>
<math>ds^2 = -(1 - \frac{r_g}{r})d(ct)^2 + \frac{1}{1 - \frac{r_g}{r}} dr^2 + r^2(d\theta^2 + \sin^2 \theta d\phi^2)</math>
<p>
Where:<br>
<math>r_g</math> = <math>2Gm|c^2</math> is the [[Swartzchild_Radius]] (below), and <math>m</math> is the mass of the source of the field.
<p>
<u>Swartzchild Radius</u><br>
<math>R_{sch} = \frac{2GM}{c^2} \approx 1\frac{1}{2} \times 10^{-27}M</math><p>
<math>R_{sch}</math> is the Swartzchild Radius; <math>G</math> is the gravitational constant, or <math>6.67 \times 10^{-11} N \frac{m^2}{kg^2}</math>.<p>
<math>M</math> is the mass of the black hole.<p>
<math>c^2</math> is the speed of light squared, or <math>8.98755 \times 10^{16}\frac{m^2}{s^2}</math>


----
[[Wormhole|Wormholes]] known as Schwarzschild wormholes are wormholes that are found in the center of a black hole and white hole and join two universes. Schwarzschild wormholes are extremely unstable.


The negative square root solution in the event horizon represents a white hole, which is a theoretical object that is the opposite (a black hole running backwards in time) if a black hole. Rather that sucking in matter,
Some speculation exists that [[quasar]]s are actually white holes instead of [[supermassive black hole]]s.
a white hole spews out matter and energy.<p>

Because of this, a white hole cannot exist, because it would be a violation of the 2<sup>nd</sup> law of thermodynamics.
Some [[creationist]]s have put forward a theory, that God created the universe out of a primordial white hole.

==External links==
*[http://curious.astro.cornell.edu/question.php?number=108 cornell.edu - Ask an astronomer: "What is a white hole?"]
*[http://casa.colorado.edu/~ajsh/schww.html Schwarzschild wormholes]
*[http://casa.colorado.edu/~ajsh/schwwbig_gif.html Schwarzschild wormhole animation]
*[http://www.icr.org/headlines/whiteholecosmology.html Creationist site]

[[Category:Black holes]]

[[fr:Trou blanc]]
[[it:Buco bianco]]
[[ja:&#12507;&#12527;&#12452;&#12488;&#12507;&#12540;&#12523;]]
[[zh:&#30333;&#27934;]]
[[de:Weißes Loch]]

{{phys-stub}}

Revision as of 15:16, 22 January 2005

The Swartzchild_Metric (below) reviels a negative squareroot solution, as well as a positive one for its geometry.

Swartzchild Metric

Where:
= is the Swartzchild_Radius (below), and is the mass of the source of the field.

Swartzchild Radius

is the Swartzchild Radius; is the gravitational constant, or .

is the mass of the black hole.

is the speed of light squared, or


The negative square root solution in the event horizon represents a white hole, which is a theoretical object that is the opposite (a black hole running backwards in time) if a black hole. Rather that sucking in matter,

a white hole spews out matter and energy.

Because of this, a white hole cannot exist, because it would be a violation of the 2nd law of thermodynamics.