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Forum index » Science and Technology » Physics » Particle
Electron and Positron Question
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Herman Trivilino
science forum Guru Wannabe


Joined: 14 May 2005
Posts: 156

PostPosted: Tue May 24, 2005 6:38 pm    Post subject: Re: Electron and Positron Question Reply with quote
"Golden Boar" <goldenboar@hotmail.com> wrote ...

Quote:
"For each kind of particle, there is an associated antiparticle with
the same mass but opposite electromagnetic, weak, and strong charges,
as well as spin." from wiki.

Electrons and positrons can have a spin of +1/2 or -1/2, so if an
electron and positron both have the same spin, they are not
anti-particles of each other.

Is my statement correct?

I guess, if we accept the Wikipedia definition
http://en.wikipedia.org/wiki/Antiparticle, then your statement is correct.

Quote:
Is the above definition wrong?

How does one determnine that? Poll the experts in that area and see whether
or not a majority agree with the definition?

Quote:
I am I missing something?

I think so. It's hard to get an understanding of physics from an
encyclopedia. They are nevertheless useful in that they summarize and may
tell a fellow which way to go to learn more.

Take the electron-positron pair as an example. Look up pair production and
see what the conservation laws tell you about the charge and spin of each
member of the pair.



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