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jz>>Both see length contraction in the other frame.
roger you rotating in circle. read the einstein 1905 paper.
>>you rotating in circle.
it's a metaphor.
Einstein moved the clock along a polygon - SO - it was about 75% circular =====>>>https://arxiv.org/ftp/astro-ph/papers/0208/0208234.pdf
Einstein 1905, p.7:
http://hermes.ffn.ub.es/luisnavarro/nue ... tivity.pdf
>>>also it should shrink by some additional Einstein magic. LOL
Einstein is a big magician and joker too.