In special relativity, we can prove that the metric is -+++ for all observers and that is by making use out of lorentz invariance. Some on this forum say that it comes as a result of constancy of light and others say that Minkowski predated einstein in making that metric, which was confusing. So, how would we make sure how was that metric found?(adsbygoogle = window.adsbygoogle || []).push({});

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# Trouble in combining those terms to get the result given

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