What are the postulates of special theory of relativity?
1 answer(s)
Einstein's special theory is having two main ideas. We call them postulates.
The first idea is simple. The laws of physics are same for everyone who is not accelerating. If you are on a smooth train moving at constant speed, and I am standing on the ground, physics is working same for both of us. This is called the Principle of Relativity.
The second idea is the strange part. The speed of light in a vacuum is always constant. It is same for all observers. It does not matter if you are moving, or the light source is moving. The speed of light is like a final speed limit for the universe.
These two simple ideas together are the foundation. They lead to big results like time slowing down.