The sign in the exp of the Fourier transform is taken as '-' by engineers and as '+' by (it seems) anybody else. As switching the sign gives the inverse Fourier transform this doesn't really matter, but still can be annoying with explicit computations. In physics the choice of standing 'inside' a certain part of a system or 'outside' is often needed to fix a sign. Best regards, jj * James Propp <jamespropp@gmail.com> [Aug 25. 2016 09:09]:
What's the canonical example of two scientific communities that have adopted mutually inconsistent sign-conventions? (Do physicists and electrical engineers describe electric fields using different sign conventions, maybe?)
This relates to my most recent "bizarro arithmetic" post inasmuch as Martinez seems to be inviting us to imagine that normal and bizarro arithmetic could be set up as separate self-consistent systems, with a dictionary that lets you convert true statements in one system into true statements in the other. I'll believe it when I see it...
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