Hi, this isn't really a homework problem... but I'm just wondering(adsbygoogle = window.adsbygoogle || []).push({});

I see the time axis as c*t, now people say that its to scale the time axis so that the world line of light is 45 degrees. But if you were to multiply time by the speed of light, wouldn't you just get the units metres or.. light years, a measurement of length not time? How can you still say that the axis represents time?

Also another question, is it possible to show both time dilation and length contraction on one spacetime diagram?

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# Spacetime diagrams: ct axis and time contraction and length dilation

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