PHYS 180 Lecture Notes - Lecture 4: Special Relativity, Length Contraction, Time Dilation
Document Summary
In order for velocity measures to agree with light, the things that velocity is made up of like time and space have to change. So if the distance gets longer than time is also going to get longer. This is the time measured for some event to happen. T2 is what someone from outside the train the time they would measure for that to happen, and it is going to be longer. Time stops for anything traveling at the speed of light. Rather than getting bigger it is getting smaller. As things are whizzing by you, they would appear smaller than they actually are. Basic idea comes from the idea of special relativity. With special relativity only vbelocity is absolute and space and time can change. The banck and forth between those two gives us spae time dimension. Time is another domesion like the 3 dimensions of space.
