What's the difference between Einstein and Galilean relativity?

Question

I don't exactly understand the difference between the two. Can someone explain it to me?

Answer 1

You can understand Galilean relativity. It is what you expect.



You cannot easily understand Einsteinian relativity - it is most definitely what you do not expect. For instance you have your own time, which will be different for anyone else in the universe, unless they are in the same inertial frame of reference as you are. I know - I didn't understand it at first, and I still don't really understand it.

Answer 2

The basic difference between the two is that

Galilean relativity assumes both time and space are absolute whereas Einstein relativity assumes both time and space are relative...

In other words Einstein discards the absolute nature of time

Answer 3

Galilean relativity asserts that the passage of time is the same for all observers. Einsteinian relativity does not claim universal time for all observers. Instead, it asserts that the speed of light and the fundamental laws of physics are the same for all observers.