feng1734 发表于 2012-1-6 11:02
这个应该是不会的，，，，超光速的空间本身的运动就发生在黑洞内部，在黑洞视界内部，所有的参考系都不可 ...
这里，，
http://casa.colorado.edu/~ajsh/schwp.html
Free-fall spacetime diagram
Free-fall coordinates reveal that the Schwarzschild geometry looks like ordinary flat space, with the distinctive feature that space itself is flowing radially inwards at the Newtonian escape velocity
The infall velocity v passes the speed of light c at the horizon.
Picture space as flowing like a river into the black hole. Imagine light rays, photons, as canoes paddling fiercely in the current. Outside the horizon, photon-canoes paddling upstream can make way against the flow. But inside the horizon, the space river is flowing inward so fast that it beats all canoes, carrying them inevitably towards their ultimate fate, the central singularity. Does the notion that space inside the horizon of a black hole falls faster than the speed of light violate Einstein's law that nothing can move faster than light? No. Einstein's law applies to the velocity of objects moving in spacetime as measured with respect to locally inertial frames. Here it is space itself that is moving. The free-fall metric expresses mathematically the above physical assertions. The free-fall metric is
ds2 = - dtff2 + (dr + v dtff)2 + r2 do2 |
where r is the usual Schwarzschild radial coordinate, and the free-fall time coordinate tff is the proper time experienced by persons who free-fall radially inward, at velocity dr/dtff = - v, from zero velocity at infinity:
tff = t + 2 r1/2 + ln|(r1/2 - 1)[size=+1]/(r1/2 + 1)| |
in units where the speed of light and the Schwarzschild radius are both unity, c = 1 and rs = 1. The free-fall metric shows that the spatial geometry is flat, having spatial metric dr2 + r2 do2, on hypersurfaces of fixed free-fall time, dtff = 0.
| 
置顶卡
变色卡
千斤顶
显身卡
，原来是坐标变了！！这些东西在一般的科普里还真找不到。