I'm trying to follow Feynman's explanation on page 26-10 of Volume 2 of The Feynman Lectures on Physics. He describes the electric and magnetic fields in a FoR S' moving between the plates of a condenser. Feynman writes that we see a reduced(adsbygoogle = window.adsbygoogle || []).push({}); Eand an added transverseBin S'. I've attached a copy of the figure in question.

The transformation formula provided in the text isE'= γE, becauseB= 0 in S. My thinking is that, according to the formula,E'increases. This effect is also consistent with the S length contraction in S'.

I am confused. Thank you.

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# Feynman field transformations

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