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Quantum Mechanics uncertainty principle demo

PostPosted: Wed Oct 01, 2014 5:26 pm
by AncientBrit

Re: Quantum Mechanics uncertainty principle demo

PostPosted: Thu Oct 02, 2014 10:17 pm
by gary
Hmmm, interesting, I have been aware of the *two* slit experiment, and, of course, Heisenberg's uncertainty principle, (until now two completely unrelated things), but I have never seen/heard/read of Heisenberg's uncertainty principle being demonstrated in this manner, and I have to say I find it unconvincing as I would have thought that the phenomenon as shown could (unlike the two slit experiment) just as easily be explained by refraction, or even reflection.

I would be interested if someone has a corroborating explanation of this phenomenon.

Edit: I am aware, of course, that the true nature of a particle wave form is that it is a probabilistic wave form, not a true waveform, but Heisenberg's uncertainty principle is more to do with the fact that the precision with which certain pairs of physical properties of a particle cannot be known, ie the position of a particle can be determined but not it's momentum and vice versa.

The two slit experiment, on the other hand, is experimental evidence that a particle can be in two places at the same time...

Re: Quantum Mechanics uncertainty principle demo

PostPosted: Fri Oct 03, 2014 6:25 pm
by AncientBrit
Morning Gary,

I must admit I was a little suspicious of the use of a single slit but I'm surprised no-one raised any objections on the YouTube site.