TeamFarrell wrote:My question is whether or not we know definitively that time is the fourth direction of motion like length is the first, x, width the second, y, and depth the third, z.
faranya wrote:Why exactly is time a dimention? I know this is a stupid question, but I just don't understand how it fits in with lenght, width, and hieght...anyone want to go back to the basics of dimention theories?
faranya wrote:Why exactly is time a dimention? I know this is a stupid question, but I just don't understand how it fits in with lenght, width, and hieght...anyone want to go back to the basics of dimention theories?
faranya wrote:Why exactly is time a dimention? I know this is a stupid question, but I just don't understand how it fits in with lenght, width, and hieght...anyone want to go back to the basics of dimention theories?
PWrong wrote:Don't worry Moonlord, Jinydu's just trying to scare you. The maths of SR isn't that difficult. Just multiply everything by gamma = 1/ sqrt(1 - v<sup>2</sup>/c<sup>2</sup>). That gives you length contraction and time dilation. In the two-week introduction that I had last year, there was very little calculus used (even though calculus was a prerequisite for the rest of the physics course). But the concepts are so non-intuitive that you won't notice how easy the maths is.
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