RQ wrote:In Einstein's theory of special relativity, he shows that a person in a train throwing a ball would seem to him like a 1dimensional motion, but to a person who's not in motion it would seem like a parabola, thus making a bigger distance. Now the if the distance changed, something else had to change also, so to make the distance over time=the correct velocity, but which one? Now we know that time applies for all objects in space, so we have to have something with a fixed velocity. In the 1860s Maxwell's equations show that the speed of light in a vacuum has to always be the same, so all observers must agree on its speed. now if we replace the ball with light and two mirrors (thought experiment) it would surely have to make the time bigger for the observer. If it increases the distance, it has to increase the time.
RQ wrote:This though has problems, since to the person in the train, a person throwing a ball outside would be a parabola?
big_pappa_smurf wrote:BUT, what is time? Time could be only our perception. Whos to say whether time actually exists? Check my post "Light speed (and faster...)"
3l3ctr0 wrote:so time can not be explained. but it exists. and we have no idea what it means. i understand i think.
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