[ExI] R: Re: Cramer on impossibility of FTL communication

Adrian Tymes atymes at gmail.com
Fri Sep 4 17:58:04 UTC 2015

On Sep 4, 2015 9:15 AM, "John Clark" <johnkclark at gmail.com> wrote:
> Yes this all sounds ridiculous but you can confirm that it's the way
nature actually works if you happen to have 3 pairs of polarizing
sunglasses. Set 2 of them up at right angles and no light gets through, but
place a third pair set at 45 degrees between the two and light does get

I've actually done that experiment.  The key is, the photons are affected
by that intervening set of sunglasses.  You have to appreciate what photons
are to fully understand how this works, and why it does not map back to
your two-clock example.

(Hint 1: "polarized" does not mean a photon only exists in that direction
and has no representation in any other, including others nonorthogonal to
that one.  Photons are vectors, not numbers, and vectors with nonzero
lengths can always be broken down into at least two orthogonal vectors,
where those "child" vectors are at angles greater than 0 but less than 90
to the "parent" vector.)

(Hint 2: photons are analog, but those clocks are digital.)
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