[sdiy] OT: The spin of electrons!

[karl dalen]

I have this book size of a brick by Brian Greene, The elegant universe,
supposed to be more on the pedagogic side of explaining strings etc.
Read it twice. Lots of physicists believe in the allmighty creator
but most biologists does not!

Peculiar!

>David Ingebretsen <dingebre at 3dphysics.net>
> 
> Electrons are neither round, nor solid, nor do they
> necessarily even have a
> shape or size. String theory would treat them as vibrating
> "strings" or even
> a P-Brane, where "P" means a Brane (or membrane) of some
> higher dimension
> which partially vibrates in our 4 dimensional time-space
> and partially in
> other dimensions which collapsed right after the big bang.
> 
> They don't "spin" nor do they orbit the nucleus in the way
> Bohr's model
> suggests. They are a wave function which is modeled by a
> probability.

> Schrödinger's wave equation is what is used to study
> particles
> theoretically. As my quantum teacher once joked (if we
> physicists can
> actually joke) "there are an infinite number of solutions
> to the equation,
> but only a few which are physically interesting. 

Thats in line with the impression Greene gives that nothing in
string theory are a definitive truth, but its fun to speculate! :-)
 
> The best you can say about an electron is that it is
> probably there and
> probably moving this fast.

I now read that magnetism are interaction
between charged particle/fields and photons? huh!?
 
> Spin is a bookkeeping quantity. It has no real physical
> meaning, just like
> color for a quark.

Dark matter grayish? :)
 
> Even at absolute zero, an electron will still possess
> energy.

Witch brings up an old DIY question, does current flow at zero volts?

KD 


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