Re: twins versus quanta collapse

Dear beda pietanza:

"beda pietanza" <beda-pietanza@xxxxxxxxx> wrote in message
news:1174939618.434774.270320@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

N:dlzc D:aol T:com (dlzc) ha scritto:

Dear beda pietanza:

"beda pietanza" <beda-pietanza@xxxxxxxxx> wrote in message
news:1174781492.834428.307320@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
....
What is the prove that the linking takes place after the
measurement and not simply (a priori) from the
common source ??????????

I apologize for the redundancy and thanks for the
attention.

I wish you had read what I wrote below. Because
you again make the same mistake.

Two streams of entangled particles, sent "left" are
spin up, sent "right" are spin down.

I don't mean to correct you but myself: as far as I
understand the two streams of particles should
have the spin randomly changing.

There is no need to allow this. Entangled particles can be
"sorted", and this makes the apparatus (and detection) more
simple, more definitive.

The "left" stream is passed into a
shielded, distant device to flip the spin on the
particle stream contained within it.

flipping in this case is tantamount of measuring
because doing measuring and flipping in a row
only the first would produce the collapse of the
outcome.

And the outcome is detectable a finite distance away, and occurs
the same distance (within our ability ot measure) from the branch
as the "flipper" acts on one stream.

Far away in the "right" stream, for no
apparent reason, and only when / if the "left"
stream is flipped, the other does too.

it comes to the same question: is the measurement
(with or without the subsequent flipping) on one the
path that makes the change on the other or all was
set from the start at generation of the entangled
couples at the source ????

Turn the flipping off and neither particle stream flips. The
actor is *now*, the entanglement was *then*.

I resume these statements:

a)Entanglement is the correlation between two
particles/photons generated from a single event by
a single source.

It is possible to have multi-body entanglement. The process of
entanglement is not necessarily an instantaneous process, and may
require multiple steps.

b)The collapse of the wave funtion is the outcome
of a measurement done on a single particle/photon
that fixes, from a range of possible outcomes, just
the one obtained.

The collapse could be initiated by another process (such as spin
flipping).

c)The collapse of the wave function a) is istantly
transferred to the other particle/photon.

Please correct, comment or integrate

This is correct. The point is, neither particle is ever "really"
separated from the other. An entangled system is a system unto
itself, and our impressed "separation" says something about *us*,
and not so much about the entangled system.

David A. Smith


.

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