[ExI] John A. Wheeler
scerir at libero.it
Fri Apr 18 08:59:03 UTC 2008
> Do you have any references to more recent works
> or current experiments?
"Turning now to the question of the empirical support
[about the uncertainty principle], we unhesitatingly
declare that rarely in the history of physics
has there been a principle of such universal importance
with so few credentials of experimental tests".
-Max Jammer, 1974.
Not sure that things changed so much in the last 35 years.
Perhaps Bush & Lahti wrote something at the end of this
paper http://arxiv.org/abs/quant-ph/0609185 (see chapter 7).
But experiments more or less about uncertainty principle
(the famous EPR is a gedanken experiment about that)
are now performed using bi-photons (two momentum-position
entangled photons, or two time-energy entangled photons).
> [...] my own idea of an experiment that would show the
> position of electrons. Or at least show they don't occupy
> every available position. would be to fire discrete particles
> through the electron path at a perpendicular angle.
> Any impact would show the presence of an electron and a
> lack of impact would prove an absence. no?
But there is some difference between
the - ex ante - 'probability cloud'
and the - ex post - tiny particle.
And ... attention to the nodal plane
of the orbitals ...
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