cse โข paper_1 โข mechanics
[UPSC CSE 1999] Special Theory of Relativity (Q399, 20M)
Prove that the expression x^2+y^2+z^2-c^2t^2 is invariant under Lorentz transformation.
Prove that the expression x^2+y^2+z^2-c^2t^2 is invariant under Lorentz transformation.
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