Quark structure proton: The quark structure of the proton. There are two up quarks in it and one down quark. The strong force is mediated by gluons (wavey). The strong force has three types of charges, the so-called red, green and the blue. Note that the choice of green for the down quark is arbitrary; the "color charge" is thought of as circulating among the three quarks.ProtonFiveQuarkStructure: Proton structure with both valence and virtual (sea) quarks based on latest research in vacuum structure and demonstrates a proton structure.
