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Neutron structure. Up quark, Gluon and Down quark. Subatomic particle, with neutral charge, constitute the nuclei of atoms. Realistic Quarks and gluons into the neutron on dark background. vector illustration
String theory, Superstrings & M-Theory. On an example of a matter, molecules, atoms, electrons, protons, neutrons and quarks. Microcosm & Macrocosm
Strings Theory icon set. Physics science illustrations. Flat long shadow design.