Thanks for the explanations .
To Nugatory: Isn't that the ball is behaving like that because of the inertia. And my understanding was that inertia is a property of objects with mass. Light which does not have any mass should not have inertia right?
To Pallen : thanks for the LASER...
I am posting a diagram directly from textbook of Resnick and Halliday. In second part of the diagram the assumption is that the light will travel with an angle in the direction of the velocity of the moving reference frame. Is that a valid assumption? Won't they have to direct the light beam...
Thanks. So that means we don't have any means of proving or disproving that the entire universe (not any planet or galaxy ) is moving at a speed.. I am asking this to clarify my concept ...not necessarily suggesting that the world is moving
I am new to relativity. I noticed that there is a general concept that someone sitting in the inertial frame (a typical one) will not be able to decide whether he/ she is at rest or moving with a constant velocity. Is this true. Are there no advanced devices that can help that person to decide...