In special relativity we have the invariant spacetime interval ds(adsbygoogle = window.adsbygoogle || []).push({}); ^{2}= dx^{2}- c^{2}dt^{2}. If we think about classical (non-relativistic) space and time as one spacetime in which the transformation between reference frames is given by the Galilean transformation, is there a corresponding spacetime interval that is invariant (the same when computed in any reference frame)?

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# Invariant Spacetime Interval for Classical Spacetime

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