Which of the following is a postulate of Special Relativity?

Question

Which of the following is a postulate of Special Relativity?

The color of light is the same for all observers.

The laws of physics are the same for all observers in uniformly moving frames of reference.

The relative speed of two objects is the same for all observers.

Physicists can make no measurements in a moving reference frame.

Answer 1

The laws of physics are the same for all observers in uniformly moving frames of reference.

= TRUE, this is the actual postulate.

General relativity goes even further and removes the "uniformly moving" clause.

The color of light is the same for all observers.

= false: the color of light changes according to the relativistic Doppler effect.

The relative speed of two objects is the same for all observers.

= false. It's true in Newton's theory, but the formulas of SR say it doesn't hold exactly and ceases to work at all when the speeds get comparable with the speed of light.

Physicists can make no measurements in a moving reference frame.

= false, an absolute nonsense. How could you then, for example, measure your speed when driving a car?

Conclusion: one was the postulate, the other possibilities were not only the correct answer but also were wrong.

Answer 2

The laws of physics are the same for all observers in uniformly moving frames of reference.

Thats true... others are false.

Pie

Answer 3

I'm pretty sure the answer has to be that the laws of physics are the same for everyone, not matter your situation.