Can someone explain to me the twin paradox with the help of spacetime diagrams? (No algebra and calculus)
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                    Here it is in pictures. https://math.ucr.edu/home//baez/physics/Relativity/SR/TwinParadox/twin_vase.html#doppler Calculus is unnecessary for the TP, but algebra is unavoidable. – m4r35n357 Feb 03 '21 at 18:24
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                    Try my answer: https://physics.stackexchange.com/a/507592/148184 (you can focus on the pictures and not worry about the algebra). – robphy Feb 03 '21 at 18:28
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                    @ZeroTheHero that doesn't satisfy the criterion of no algebra – John Rennie Feb 04 '21 at 07:06
