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[SD] Electron Is Surprisingly Spherical, Say Scientists Following 10-Year Study - Page 2

post #11 of 14
I don't have a good enough knowledge of this to contribute any worthwhile opinion, but quoting an old wikipedia article to back up your argument about a brand new scientific study seems a bit shaky....
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post #12 of 14
Quote:
Originally Posted by dantoddd View Post
they're not talking about the shape of an individual electron they're talking about something else. most likely they're talking about surface of the electrical potential, which explains why they're talking about electric dipole moment. The electron most definitely is defined as a point, and even then basic laws of quantum mechanics demand the precise location of this point to be undefinable.
But the Heisenberg uncertainty principle states that the electron must occupy a volume, (even if it is of the order 10^-30 m^3).

Although they're described as point-like for most of the mathematical models to work, as I just mentioned the assumption isn't wholly consistent. An electron definitely does not occupy a zero volume (otherwise QM wouldn't work in describing it), although it can be treated as a point mass for most applications.
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post #13 of 14
Quote:
Originally Posted by tommy1993 View Post
I don't have a good enough knowledge of this to contribute any worthwhile opinion, but quoting an old wikipedia article to back up your argument about a brand new scientific study seems a bit shaky....
it's not shaky at all.

Firstly, the scientific study isn't actually saying what these people assume it is saying. The ignorance here is not on the part of these scientists or myself. The ignorance is on the part of the person who wrote the article and these other people who are latching onto words with any understanding of what the hell is going on.

secondly, that wiki page is nicely referenced. trace the references you can find.

What they're talking about here is the electric field around the electron is symmetric up to a certain level. This is actually a big result, but not because it shows the electron has shape, which it doesn't even remotely claim. It's big result because it should get rid of a lot of SUSY theories that depend on EDM at those length scales.
Edited by dantoddd - 5/26/11 at 1:45am
post #14 of 14
Quote:
Originally Posted by Scorpii View Post
But the Heisenberg uncertainty principle states that the electron must occupy a volume, (even if it is of the order 10^-30 m^3).

Although they're described as point-like for most of the mathematical models to work, as I just mentioned the assumption isn't wholly consistent. An electron definitely does not occupy a zero volume (otherwise QM wouldn't work in describing it), although it can be treated as a point mass for most applications.

All elementary particles are point like particles, as far as standard model is concerned. not occupying zero volume means they can be found within a certain volume at given energy conditions. not that they are that big.

And don't for a second think theorist dump quantum mechanic down the drain to make standard model work, especially at the most basic level. Those things are wholly consistent.
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