- #36

PeterDonis

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tade said:I'd like to figure out how they proved it pre-relativity

The fact that Maxwell's Equations are Lorentz invariant was known pre-relativity. Einstein in his 1905 paper was not telling anyone anything they did not already know when he said that Maxwell's Equations were Lorentz invariant. The new element in that paper was figuring out how to make ordinary

*mechanics*, i.e., descriptions of things like measuring rods and clocks, Lorentz invariant, not electrodynamics.