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Author Topic: quantum mechanics  (Read 1860 times)

Offline theCoolScientist

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quantum mechanics
« on: 07/01/2015 23:34:06 »
why or rather how does square of wavefunction represent the probablity of finding a particle?Any idea how born the guy who deviced this theory found it?


 

Offline JohnDuffield

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Re: quantum mechanics
« Reply #1 on: 08/01/2015 13:29:37 »
why or rather how does square of wavefunction represent the probablity of finding a particle?
I think it's because detection involves a wavefunction-wavefunction interaction. I've talked with people about this, and kicked around the idea that detection is something like an optical Fourier transform:



In the double-slit experiment the photon goes through both slits because it's an "extended entity". Think in terms of a seismic wave, and see weak measurement work by Aephraim Steinberg et al. This is their depiction of a photon going through both slits of the dual-slit experiment:



However when you put a detector at one slit it converts the photon into a dot which goes through one slit only. So there's no interference any more. Then at the screen there's another detector that converts the photon into a dot.

Any idea how born the guy who deviced this theory found it?
Sorry, no. Maybe somebody else knows that.
 

Offline jeffreyH

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Re: quantum mechanics
« Reply #2 on: 08/01/2015 17:06:50 »
The Born rule with a summary history.

http://en.wikipedia.org/wiki/Born_rule
 

Offline PmbPhy

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Re: quantum mechanics
« Reply #3 on: 08/01/2015 20:01:26 »
The Born rule with a summary history.

http://en.wikipedia.org/wiki/Born_rule
This is also called the Copenhagen Interepretation from what I understand. That's how griffiths texts teaches it as well as Wiki. See:
http://en.wikipedia.org/wiki/Copenhagen_interpretation
 

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Re: quantum mechanics
« Reply #3 on: 08/01/2015 20:01:26 »

 

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