On Friday, September 5, 2025 at 6:50:49 AM UTC-6 John Clark wrote:

On Fri, Sep 5, 2025 at 7:45 AM Alan Grayson <[email protected]> wrote:

*> there's no way to get the result for a free particle,*


* A "free particle" is a particle that is not subject to ANY external force 
or have any potential energy, so its total energy is kinetic. That makes 
things simpler and as a result the quantum wave function is just a plane 
wave. But in the real world things are more complicated because "free 
particles" do not exist.   *


*But we can imagine a free particle in empty space and we do that often. 
So, IMO, there's no way to get a particle's wf from a double slit 
experiment, even a rough approximation. Consequently, ME's are not enough 
to get a particle's wf by observing distribution patterns on the screen. 
And to correct my previous statement, if we don't know which-way in double 
slit experiment, we get two overlapping peaks, centered on the screen, 
opposite the space between the slits. AG*

* John K Clark    See what's on my new list at  Extropolis 
<https://groups.google.com/g/extropolis>*
*tmc*

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