Difference between revisions of "Proton"
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| − | '''Protons''' are one of the two types of [[sub-atomic]] particles that form in the [[nucleus]] of an [[atom]] (together with [[neutron | + | '''Protons''' are one of the two types of [[sub-atomic]] particles that form in the [[nucleus]] of an [[atom]] (together with [[neutron]]s).<ref>Serway, Beichner: ''Physics for Scientists and Engineers'', 5th edition</ref> |
| − | A proton is made up of two up [[quark | + | A proton is made up of two up [[quark]]s and one down quark. According to the [[Standard Model]] of particle physics, quarks are [[fundamental particle]]s, meaning that they cannot be split into smaller particles.<ref>Krane: ''Modern Physics'', 2nd edition</ref> |
==Properties== | ==Properties== | ||
Revision as of 21:53, March 17, 2008
Protons are one of the two types of sub-atomic particles that form in the nucleus of an atom (together with neutrons).[1]
A proton is made up of two up quarks and one down quark. According to the Standard Model of particle physics, quarks are fundamental particles, meaning that they cannot be split into smaller particles.[2]