Talk:Proton

This is not a particularly interesting fact....

Interesting fact: the ratio of the mass of the proton to the mass of the electron is to 2 parts in 100000 equal to 6*pi^5.

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No? Well, items relating proton mass to Britney Spears are pretty short on the ground. I guess the fact that the product of the electrical permitivity and magnetic permeability of free space were very close [within experimental precision equal to] to the reciprocal of the square of the speed of light is also exceedingly boring. Except that the notorious crank Maxwell based electromagnetic field theory from this observation. So if the almost non-mentioned fact that the mass of the proton to the electron is to a high degree of precision a simple multiple of a simple power of pi doesn't spark some degree of interest in you, then I guess you're just not cut out to be a physicist. :-)

The age the Universe had when the song ATWA from System of a Down's Toxicity when it was released was 3*pi^30 times the duration of the song itself, so what?

Roadrunner is correct, and I'm afraid you, 81.86.154.69, are not. Playing with things like N*pi^M, or change pi for e, or whatever, you can get almost any number. This has nothing to do with Maxwell's observation for the "product of the ...", because indeed it is not true, Maxwell was not doing numerology (as you are doing), he explicitly calculated the speed of an electromagnetic wave (= 1/sqrt(mu * epsilon) ) and compared it with the speed of light.

Moreover, today we know that protons are made of quarks, and that their mass is not the sum of the masses of the three quarks, because the binding energy amounts for a lot more. So there is, no relationship foreseen whatsoever.

JBC

Hello.

I´m a young spanish student and i´d like to give you my congratulations for this wonderfull encyclopedia,i´m really surprised of its whole content. Before beginning i´d like to give you my sorries because my english is not so good as i´d like it to be,but i hope i will be able to explain my self. Anyway be sure that i understand whatever in this encyclopedia you´re talking about.

Cause my low knowledge about Quantum mechanics (in comparison whith you but not whith my friends) i imagine that my doubt will not supose you a great work.

I'm confused about what you explain in Proton page. Here i can read that "the charge of proton must be equal to the charge of electron", naturally, to get forcing equilibrium. Some lines down i can read that "the positron has the same magnitud charge as the electron but oposite in sign". My doubt stribes in the following question: if the positron is the antiparticle of the electron and they have the same but oposite charge, and the charge of proton must beequal to the charge of electron (and, naturally, basing my self in the fact that positron, charge +, electron, charge -; that means to me that charges are also oposite), here i have a contradiction for my mental schema. This make me think by any way that protons and positrons are the same particle, what i´m sure is not true.

So, concluding, my answer is: What kind of phenomenon i unknow makes different the behavior of proton and positron front the electron?

Thnks, :)

The mass of a proton is much larger than that of a positron. - Patrick 20:04, 11 Dec 2003 (UTC)

Unlike the positron, the proton feels the strong nuclear force. —User:Herbee 2004-02-10

Disambiguation

This page should be a disambiguation page and the stuff should be moved to Proton (physics). Bensaccount 01:20, 28 Feb 2004 (UTC)

I disagree. I mean, the physics related "Proton" is more likely to be the wanted subject of the artile over the "proton" title. So, i think there should be a direct redirection to the "proton (physics)" article, and a link to the disambiguation page. Kieff 04:59, Apr 11, 2004 (UTC)

You are right. My mistake. Bensaccount 17:32, 16 May 2004 (UTC)

Mass in eV

I'm a little confused, why is mass measured in eV?

It's a shorthand that physicists like to use. Particle physicist types are generally concerned with calculating and measuring energies rather than masses in particle reactions and such, and so they get to a rest mass by converting the rest energy with a factor of c² (good ol' E=mc²). Being lazy, however, they tend to drop factors of c (and h, Planck's constant) when doing calculations, sticking them back in when it's necessary to actually get a number out.

However, this article isn't written for physicists, so I'll add the c²... Carmelbuck 03:56, 12 Nov 2004 (UTC)

It's not laziness. c = 1 is part of a perfectly acceptable and useful system of units. -- Xerxes 03:34, 2004 Nov 13 (UTC)

I don't knof if Xerxes' quote was a joke, but c=1 does not mean that it isn't there. It is still correct to include it. Pdbailey 04:06, 23 Nov 2004 (UTC)