On 9/7/2025 11:58 AM, John Clark wrote:
On Sun, Sep 7, 2025 at 10:22 AM Alan Grayson <[email protected]>
wrote:
/> Please repeat your comment about the probability being
cos(theta), under what conditions. TY, AG /
*This is what I said on November 10 of last year:*
*If 2 billion years ago a correlated pair of photons was created, and
1 billion years later I randomly pick an axis (let's call that 0
degrees) and set my polarizing filter to that axis, then regardless of
which axis I choose there is a 50% chance the photon will make it
through and a 50% chance it will not, let's suppose it does _not_. One
billion years later you arbitrarily pick an axis and you set your
polarizing filter to that axis. If you just happen to pick the same
axis I did, because most correlated photons are anti-correlated, *
Most are correlated by conservation of momentum and angular momentum.
That means they go in opposite directions with the same handedness of
circular polarization. So measuring one as passing thru a vertical
polarizer collapses the other to also pass thru a vertically oriented
polarizer.
Brent
*there is a 100% chance the other entangled photon _will _make it
through your filter. But if for example the axis that you picked is 30
degrees different than mine then there is only a 75% chance your
photon will make it through your filter; this is because [COS (X)]^2
=0.75 if X = 30 DEGREES (π/6 radians).*
*
*
*If you use that _[_COS (X)]^2 rule (see above) about polarized light,
which has been known for centuries, and if the strange behavior in the
quantum world is caused by local hidden variables, then certain
correlations are impossible; however experiments have shown that those
correlations _ARE_ possible, therefore the strange behavior of the
quantum world cannot be due to local hidden variables. *
*
*
/>Do these other Graysons have the same memory as I do/
*Certainly! All the other other Alan Graysons**have the exact same
memories that you have because they all share the exact same past,
however they experience a different present and as a result a
different future too. Sometimes the difference is tiny, sometimes the
difference is huge. *
/> So, in this "reality", there are at least a countably infinite
number of Grayson pairs, /
*Maybe, maybe not.As I've said before, on the finite versus infinite
question Many Worlds is agnostic. But at the very least there are one
hell of a lot of worlds, that's why it's called "Many Worlds" .*
*
*
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
*3e2*
*
*
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