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Re: Classical entanglement.

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On 30/06/2016 2:38 PM, Y wrote:
> Which particle, and how did u get pi/4 ? :)
>
> -y
>

Take polarization correlated photons, where measurements of the 
polarization on parallel axes always found to differ. The probability 
that they differ for axes an an angle alpha is cos^2(alpha).

To get the probability for random angles, we have to integrate that over 
the range 0 to Pi/2.

The integral of cos^2(x) is 1/2 * (x + sin(x) * cos(x)) + constant.

At the limits, the sin(x) * cos(x) term is zero, leaving just

1/2 *(Pi/2) - 1/2 * 0

or Pi/4.

Sylvia.

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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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