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Symon (Mechanics) pp.513 said:If we have two inertial systems, and if in each we measure the speed v with which the other is moving, we must get the same speed in both cases. If this were not the case, we would have an experimental way of distuiguishing between the two coordinate systems. This would be in conflict with our postulate (13.1).
Here's postulate (13.1) now...
Symon (Mechanics) pp.502 said:Postulate of special relativity. Every law of physics must be such that if it holds in any coordinate system, it holds (in the same form <--added by me) also in any other coordinate system moving at a constant velocity with respect to the first.
First of all what does he mean by "distinguish"? And why would that be in contradiction with the postulate of SR?
Thanks.