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Re: Planetary rovers, SETI and other musings, was Re: update.356 (fwd)



Forwarded message:

> Date: Wed, 28 Jan 1998 10:44:57 -0800
> From: Steve Schear <[email protected]>
> Subject: Re: Planetary rovers, SETI and other musings, was Re: update.356
>  (fwd)

> >The state is determined *at the time of collapse*. Once the collapse occurs
> >the synchronization is no longer present and subsequent events can indeed
> >alter the polarization of one particle without altering the other. Simply
> >bouncing that photon via refraction off a surface can alter the
> >polarization.
> 
> If that is the case, I still don't understand why and out-of-band signal is
> required.  If the sender collapses the wave function shortly before the
> signal reaches the intended receiver its unlikely to have changed
> polarization again.

What do you mean 'shortly before', the collapse is instantaneous. There ain't
no time to send anything. The channle can carry one bit of data, the
collapse has occured (1) or it hasn't (0). It isn't like a modem, CD, or
other comm channels where you have a bandwidth and can piggy back signals
for synchronization by using parts of that bandwidth.


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