[sdiy] OT: The spin of electrons!

[David Ingebretsen]

I forget who said this, but in paraphrase...

"All models are wrong, some are useful."

David

David M. Ingebretsen M.S., M.E.
Collision Forensics & Engineering, Inc.
2469 East Fort Union Blvd. STE 114
Salt Lake City, UT 84121
www.CFandE.com

801 733-5458 Office
801 842-5451 Cell

dingebre at CFandE.com
dingebre at 3dphysics.net





~~ -----Original Message-----
~~ From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
~~ bounces at dropmix.xs4all.nl] On Behalf Of Magnus Danielson
~~ Sent: Monday, January 04, 2010 8:41 AM
~~ To: karl dalen
~~ Cc: synth-diy at dropmix.xs4all.nl
~~ Subject: Re: [sdiy] OT: The spin of electrons!
~~ 
~~ karl dalen wrote:
~~ >> String theory is just that, a theory. It combines the fun
~~ >> of abstract math with the fun of abstract physical models.
~~ >> Still they fail to completely model the hyperfine resonance
~~ >> of Hydrogen while the experimentalists have measured it into
~~ >> many more digits than the best theoretical number has been
~~ >> able to reach.
~~ >
~~ > That sounds contradictoriness?
~~ 
~~ Not really, just to say that there is more homework to be done, even if
~~ the biggest lines of corrections have been modeled.
~~ 
~~ >>> Witch brings up an old DIY question, does current flow
~~ >> at zero volts?
~~ >>
~~ >> On average no, if you measured your volts properly.
~~ >> Eventually they will change the definition of an Ampere from
~~ >> a very constructed theoretical description into being based
~~ >> on the number of element charges passing a cross-section per
~~ >> second.
~~ >
~~ > It was intended as a ironic joke! **current flows**, see? :)
~~ 
~~ Ah.
~~ 
~~ > Anyhow the whole Bohrian model apperas to be false, no lake of balls!
~~ 
~~ It is a model, but it made more sense than anything else of that time,
~~ so it gained support. With its help a whole number of things could be
~~ predicted in a fairly comprehensive mannor. There where deviations
~~ thought, which led to new refined models. Fine-structure splitting,
~~ hyperfine structure splitting etc.
~~ 
~~ The Bohrian planetary model is there because we could not come up with a
~~ better model, but the math it produced matched what the experimentalists
~~ was saying.
~~ 
~~ If you can come up with a complete model of everything, accuratly
~~ predice all values etc. then basic research would end up in only having
~~ to produce accurate numbers for the constants rather than measure all
~~ deviations... and of course attempting to punch hole in the theory. We
~~ are not there yeat.
~~ 
~~ We are quite a few years away from that point. We still haven't got
~~ warp-drive for instance. We don't have a ship lost in the fourth
~~ quadrant just yeat and we sure does not use worm-holes to travel between
~~ stars and galaxies.
~~ 
~~ Cheers,
~~ Magnus
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