空间扭曲

yuefei

einstein theory相对论说，质量可以使到空间扭曲，什么意思，怎么解释？

就是说一颗很大很大的星星，四周围的空间被扭曲，变成黑洞？

fgh

空间是弯曲的事实意味着，在空间中光线看起来不是沿着直线走。广义相对论预言光线必须被引力场所折弯。
直到1919年，一个英国的探险队从西非观测日食，指出光线确实像理论所预言的那样被太阳所偏折。

yuefei

引力场是gravitation force?

就是说如果离地球远一点有一颗星星，当我们从另一个星球来看，会看到星星在地球附近？因为地球的引力场而使到笔直的光线扭曲？

fgh

大概是这样吧。。。。。

hidden

This is a hard question indeed. Einstein's theory shows that a very massive body will alter the space-time around it. The space-time has 4 dimensions: one time dimension and three space dimensions. I don't think he said that the gravitational force changes the direction of light. Gravitational force is an effect of the space-time as well. Thus both traversal of light and gravitational force are changed due to the massive body. But I might be wrong here...

[ 本帖最后由 hidden 于 28-4-2008 04:25 PM 编辑 ]

中庸

gravity is treated as geometry.....