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Originally Posted by xelasnave
3) Also as I asked Ron on what basis did Time find its way into General Relativity ..was it via formula for acceleration
alex
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In his general theory of relativity, Einstein views gravity not as a force but as a curvature of the fabric of space in the presence of a massive object like a black hole. According to Einstein, the fabric of space is a four-dimensional space representing the universe. It consists of the commonly accepted three space dimensions plus the time dimension. This four-dimensional fabric of space is also referred to as space-time. The basic elements of space-time are events. In any given space-time, an event is a unique position at a unique time. The example of an event on a universal scale is a comet crashing into another celestial body. Einstein also stated that objects with large masses can warp time by speeding it up or slowing it down.