| Summary: | 碩士 === 淡江大學 === 物理研究所 === 81 === Since 1916 the Einstein General Relativity was publish, there
were people who continuously put forth the new points of view
about universe. The solutions of Einstein equations which were
brought forward by Schwarzschild and Kerr were especially the
most attractive ones among these excellent scientific results.
In 1916, Schwarzschild put forth Schwarzschild metric, it
provided a particle which was a static spacetime model without
charge. Kerr in 1963 also provided a new solution of Einstein
equations, and we named it Kerr metric. It help us to
understand a spacetime structure of rotational particle without
charge. Both Schwarzschild solution and Kerr solution explained
the basic problems of black holes. In Schwarzschild metric, it
appears black holes which are at criticle radius,and criticle
radius is equal to two times mass where we suppose the value of
light velocity and graviation constant are one. Besides in
approach to criticleradius which we also name it Schwarzschild
radius, the funny property it appears is people outside think
that the events happened become slowly, but thereal situation
is not in this way. This is because the graviation is very
large (complete collapse), so the light can not transmit to
observors far away.
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