Search results for "Down quark" - New World Encyclopedia
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File:Quark structure proton.svg [https://commons.wikimedia.org/wiki/File:Quark_structure_proton.svg source and rights] ...(525 × 525 (16 KB)) - 14:04, 30 September 2022
File:Quark structure neutron.svg [https://commons.wikimedia.org/wiki/File:Quark_structure_neutron.svg source and rights] ...(525 × 525 (16 KB)) - 14:04, 30 September 2022
File:Quark structure pion.svg [https://commons.wikimedia.org/wiki/File:Quark_structure_pion.svg source and rights] ...(525 × 525 (13 KB)) - 14:05, 30 September 2022
