Illustration of a proton, a subatomic particle with a positive electric charge composed of two up quarks and one down quark.

---

Size: 3324px × 3600px
Location:
Photo credit: © Science History Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -atomic, atom, atomic, constituent, hadron, illustration, particles, physics, proton, quark, quarks, scientific, subatomic