Groups > sci.physics.relativity > #386946

Re: Classical entanglement.

From	Sylvia Else <sylvia@not.at.this.address>
Newsgroups	sci.physics.relativity
Subject	Re: Classical entanglement.
Date	2016-06-30 11:28 +1000
Message-ID	<dtjatlFq7fhU1@mid.individual.net> (permalink)
References	(14 earlier) <97540be8-6552-498b-b0dc-f2f9aa24b138@googlegroups.com> <dth0s8FbmsvU2@mid.individual.net> <e0aaa2ac-035f-47e7-99d1-4d7cd7ef4030@googlegroups.com> <dthrnrFgvggU1@mid.individual.net> <dc6f2774-8294-4588-a76e-b98f2c3f2e68@googlegroups.com>

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On 29/06/2016 11:15 PM, Y wrote:
> On Wednesday, June 29, 2016 at 10:03:10 PM UTC+10, Sylvia Else
> wrote:
>> On 29/06/2016 9:24 PM, Y wrote:
>>> Neither do elementary particles. The quantizations are "assigned"
>>> to specific states. There is nothing preventing a left spin
>>> being assigned 0 and a right spin being assigned 1.
>>>
>>> -y
>>>
>>
>> The difference is that the magnitude of the particle spin is always
>> the same for that type of particle, and it either has a spin of
>> that magnitude along a particular axis, or it has no spin along
>> that axis, with no intermediate magnitudes possible.
>>
>> The magnitude of the spin of a classical object is infinitely
>> variable.
>>
>> Sylvia.
>
>
> Hmm. Have a read of this paper. It's interesting.
>
>
> https://arxiv.org/ftp/quant-ph/papers/0112/0112019.pdf
>
> As far as I'm aware the magnitude of the spin is irrelevant, merely
> that Alice in her local coordinate system with a down spin knows that
> in a non-local coordinate system of Bob's the spin is up.
>
> This is basically what entanglement is.

The simple case where Alice and Bob measure the spin of particles in 
either parallel or orthogonal axes can be modelled using hidden 
variables. It's not the interesting case.

The interesting case is where Alice and Bob measure the spin in axes 
that are at other angles. In particular, if Alice and Bob measure in 
axes that are at 30 degrees to each other, then then measurements differ 
from the parallel case 1 time in 4. But if they measure at 60 degrees, 
the measurements differ from the parallel case 3 times in 4. This is the 
situation that cannot be represented by a local model, and it doesn't 
arise with macroscopic objects.

Sylvia.

Thread

Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-27 04:52 -0700
  Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-27 22:01 +1000
    Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-27 05:02 -0700
      Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-27 22:17 +1000
        Re: Classical entanglement. mlwozniak@wp.pl - 2016-06-27 06:25 -0700
    Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-27 05:13 -0700
      Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-27 22:28 +1000
        Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-27 05:40 -0700
          Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-28 11:46 +1000
            Re: Classical entanglement. Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-28 09:08 +0200
              Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-28 19:48 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-28 02:59 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-28 20:23 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-28 04:00 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-28 21:46 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-28 05:42 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-29 11:58 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-28 21:11 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-29 14:24 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 04:24 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-29 22:03 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 06:15 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-30 11:28 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 19:13 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-30 12:34 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 20:02 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-30 14:12 +1000
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 21:38 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-30 14:49 +1000
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-06-30 08:11 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-30 11:57 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-07-01 12:34 +1000
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-07-01 07:42 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-01 07:55 -0700
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-07-01 10:15 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-01 08:43 -0700
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-01 09:09 -0700
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-07-01 13:29 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-01 17:56 -0700
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-02 08:35 -0700
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-07-04 11:08 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-07-04 10:07 -0700
                Re: Classical entanglement. Odd Bodkin <bodkinodd@gmail.com> - 2016-07-04 12:57 -0500
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-07-02 12:55 +1000
                Re: Classical entanglement. Tom Roberts <tjroberts137@sbcglobal.net> - 2016-07-02 00:06 -0500
                Re: Classical entanglement. Y <yanarchi@hotmail.com> - 2016-06-29 20:00 -0700
                Re: Classical entanglement. Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-28 12:52 +0200
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-28 21:47 +1000
                Re: Classical entanglement. Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-28 15:19 +0200
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-29 11:59 +1000
                Re: Classical entanglement. mlwozniak@wp.pl - 2016-06-29 06:15 -0700
                Re: Classical entanglement. Sylvia Else <sylvia@not.at.this.address> - 2016-06-30 11:48 +1000
  Re: Classical entanglement. astrofoton@interia.pl - 2016-07-02 12:06 -0700

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