Dirac's rest mass seems to be expressed as a fourth dimension. If we were to try to include this rest-mass dimension into Minowski space time, could it be expressed as a distance in space? S^2=x^2+y^2+z^2+(rest-mass dimension)^2-(ct)^2?(adsbygoogle = window.adsbygoogle || []).push({});

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# I Dirac's Rest Mass in Minowski Spacetime

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