Illustration of a proton and a neutron, subatomic particles composed of quarks. A proton consists of two up quarks and one down quark and a neutron has two down quarks and one up quark. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schroeder, Monica |
Taille de l’image : | 4694 px × 2305 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |