A subatomic particle is an
elementary or
composite particle smaller than an
atom.
Particle physics and
nuclear physics are concerned with the study of these particles, their interactions, and non-atomic
matter composed from them.Subatomic particles include the atomic constituents
electrons,
protons, and
neutrons. Protons and neutrons are
composite particles, consisting of
quarks. A proton contains two up quarks and one down quark, while a neutron consists of one up quark and two down quarks; the quarks are held together in the nucleus by
gluons. There are six different types of quark in all ('up', 'down', 'bottom', 'top', 'strange', and 'charm'), as well as other particles including
photons and
neutrinos which are produced copiously in the
sun. Most of the particles that have been discovered are encountered in
cosmic rays interacting with matter and are produced by scattering processes in
particle accelerators. There are dozens of subatomic particles.
See more at Wikipedia.org...
. Particles which are smaller than atoms. The term is sometimes used to refer to the particles: protons, neutrons and electrons, which make up atoms. However protons and neutrons are themselves each composed of three
quarks.
Free Download Now!
