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The fourth dimension is not "time'. The fourth dimension is a real space dimension r=ct, where c is the speed of light and the fourth dimension r is the product of 'c' and time which gives a real number distance. The other three dimensions are vector dimensions V= Ix + Jx + Ky. The vectors I, J and K are unit vectors with the vector property I2=J2=K2=IJK= - 1.

So, all the dimensions are units of space!

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โˆ™ 2011-06-04 18:13:45
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Q: How is the fourth dimension the time?
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