The proton consists of three quarks - two "up" quarks and one "down" quark. The "up" quark has a charge of 2/3, and the "down" quark has a charge of -1/3. In total, the proton has the charge 1.

See scattering experiment by J.I.Friedman, H.W.Kendall och R.E.Taylor!

If you want to zoom into matter, click on the picture. If you want to zoom out, click on "back."

[home]    [quarks]     [leptons]    [forces]    [inside matter]