Sometimes, though, it is convenient to transform from one coordinate system to another, even if not invariant, so we need transforms.
Sometimes, though, it is convenient to transform from one coordinate system to another, even if not invariant, so we need transforms.
Consider a light pulse starting at x=x’=0=t=t’ where x’ is moving with velocity V, then x=ct, x’=ct’, and the Galilean transforms must be modified, by a factor we name ?
and by eliminating t’ from these eqs