Contradiction between two fundamentals

[commander_24]

I was reading Einstein's book on Relativity.
He says something about a contradiction between the law of Propagation of light in vacuum and the principle of relativity(which he calls in restricted sense).What is this contradiction?How does it lead to Einstein's conclusion that time and distance are relative.

 

[Nugatory]

I was reading Einstein's book on Relativity.
He says something about a contradiction between the law of Propagation of light in vacuum and the principle of relativity(which he calls in restricted sense).What is this contradiction?How does it lead to Einstein's conclusion that time and distance are relative.

You will find the entire logical chain in Enstein's original paper on Special Relativity - google for "On the electrodynamics of moving bodies" and you will find one of the many copies out there on the web. I will caution you that if you are trying to learn relativity, as opposed to studying the history of theory, you will be better served by a more modern treatment such as Taylor and Wheeler's "Spacetime Physics".