Main Page | See live article | Alphabetical index Table of contents 1 Draft 2 analogy with electrical charge 3 description 4 See also Draft analogy with electrical charge electrical charge -> color charge (sometimes color number) electromagnetic force -> color force charged particules -> quarks & gluons exchange of photon -> exchange of gluons (difference: gluons are also 'color' charged) description No physical relation with electromagnetic spectrum, just a name for a three-valued property Introduced to allow three quarks to coexist and still satisfy the Pauli exclusion principle -> new quantum state. color force => force which bind quarks together to forms hadrons, the strong nuclear force => sort of residual of the color force which bind baryons together. Six kind: 'red, 'green', 'blue' & 'anti-red', 'anti-green' & 'anti-blue' Hadrons = particules which contains quarks leptons = doesn't conatins quarks, so are always color-neutral All observed particules are always color neutral. when interacting, gluons & quarks must change of color resulting must be color neutral example: quark(red) -> quark(blue) + gluons(red, anti-blue). => conservation of color charge Mathematic of color charge: SU(3) Only 8 sort of gluons: ... See also quarks, gluons, strong interaction & quantum chromodynamics This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.