Re: atheists for freedom

On 20 Sep, 17:09, "nando_rontel...@xxxxxxxxx"
<nando_rontel...@xxxxxxxxx> wrote:
And you are also wrong about the doubleslit experiment.

If we put a device on a slit which can detect a photon passing
through, and turns on a light if a photon passes through the slit so
that it is observed, then the pattern of light will change.

The double slit experiment works on all kinds of scales well above the
photon level including with water in a wave tank. That's not the
interesting bit.

But if we put a device on a slit which can detect a photon passing
through, but disconnect it from the light so that it can't be
observed, then the lightpattern will NOT change.

Time for a quote form wikipedia...

"A remarkable result follows from a variation of the double-slit
experiment, in which detectors are placed in each of the two slits, in
an attempt to determine which slit the photon passes through on its
way to the screen. Placing a detector even in just one of the slits
will result in the disappearance of the interference pattern. The
detection of a photon involves a physical interaction between the
photon and the detector of the sort that physically changes the
detector. (If nothing changed in the detector, it would not detect
anything.)"


So that's why I made reasonable argument what it is precisely about an
observer that made the lightpattern change. And what that is, is as I
argued, that an observer is a decider.

See above - it is the detector not the observer that changes the
experiment.

Why on earth do you think that the doubleslit experiment is held to be
such a strange mystery in science, if you think it was all so
straightforward as you make it out to be?

The strange thing is that one photon appears to pass through two slots
and interfers with it's self. That's the mystery. 'Observers' arnt
part of this experiement.

So, Nando, be honest, who has made the mistake here, me or you?

I'm expecting either a huge wave of denial or silence. It would be
nice if you suprised me.

Stew Dean


.

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