The Relationship Between Time and Space

Abstract

Abstract The relationship between time and space has been studied by people for a long time. Although it is still in a development stage, it is necessary to be researched. This paper aims to introduce the space-time relationship from classical physics to modern physics. Subsequently, the author analyses Galilean transformation and its limitations to lead naturally to Lorentz transformation. After that, the special relativity is shown by giving some examples. Special relativity is based on two postulates, including the Principle of Relativity and the Principle of Invariant Light Speed. Mickelson-Morley experiment and mass-energy equivalence can explain the Principle of Invariant Light Speed well. The paper then introduces intuitively Minkowski spacetime, which can help readers understand four-dimensional spacetime as well. In addition, the distinctions of different dimensional spaces will be mentioned. The essay also discusses the general relativity that time is also affected by gravity and the principle of equivalence, but it’s really only a quick cheat-sheet summary. Finally, this paper points out the possibility of reaching the speed of light, and if it can be achieved, spacetime will be changed so that lots of unbelievable consequences will come one after another. The article draws a conclusion that time and space are like a whole, one change makes all change.