Re: Two-slit experiment

Oz <Oz@xxxxxxxxxxxxxxxxxxxx> wrote in
news:T1db1MScyioEFwLk@xxxxxxxxxxxxxxxxxxxx:

scerir <scerir@xxxxxxxxx> writes

It seems that this experiment led to Dirac's famous koan
"each photon then interferes only with itself".

Except we know this is not correct. Experiments have been done where two
separate lasers fired through two separate slits produces an
interference pattern.

Furthermore this happened even if "the probability of two photons being
in the apparatus at one time approached zero".

In any case anyone who has listened to MW radio knows that separate
radio transmitters on the same frequency can readily cause interference
patterns.


What is usually heard there is the 'beat frequency' [hetrodyne] as signals
of two slighly different frequencies (or phases) are 'combined' in the
receiver's detector.

A signal arriving over multipaths can interfer with itself as the phase of
the multipath signals varies due to changes in path length as ionospheric
conditions vary.

Of course a HUGE number of photon is involved as MW radio frequency photons
each carry very little energy.

.

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