Time Reversal

Jan 30, 2007 02:10

Could a physics major please explain t-symmetry to me?

On another note...(Inane theory alert) Maybe heaven is stored in a white hole.

[wiki]The time reversal of a black hole is a white hole. From the outside they appear similar. While a black hole has a beginning and is inescapable, a white hole has an ending and cannot be entered. The forward light-cones of a white hole are directed outward; and its backward light-cones are directed towards the center.

The event horizon of a black hole may be thought of as a surface moving outward at the local speed of light which is just on the edge between escaping and falling back. The event horizon of a white hole is a surface moving inward at the local speed of light which is just on the edge between being swept outward and succeeding in reaching the center. They are two different kinds of horizons -- the horizon of a white hole is like the horizon of a black hole turned inside-out.[/wiki]
Previous post Next post
Up