Was it the Michelson-Morley experiment?But I read that it only established non existence of aether.
Dont want the deep technical details but only a conceptual description of one such experiment. What bothers me exactly is this:
In most non mathematical explanation of this topic, first a standing in the midpoint observation is given as a definition for checking simultaneity. And then it proceeds that such an observation cannot be made for events in moving frames as we(or they)will be moving towards one of those event, so the midpoint observation fails. Maybe we can modify the midpoint; but maybe that is difficult to accomplish. Can it be demonstrated?
But a more important question for me is why do we maintian this kind of explanation if constancy of light speed we postulate? One event is coming towards me-isnt that the same as one event is coming faster at me? Say I am moving and i want to check 2 events on the ground for simultaneity and then if i was really at the midpoint then light would surely meet me eyes from both events simultaneously if they were actually simultaneous on the ground right? i.e, given the constancy of light speed for me and people on the ground. ???
So how is relativity of simultaneity compatible with constancy of light speed in the sense of above non mathematical explanation? Or am i wrong?