quark | has antiparticle antiquark | ![2001-09-27 09:28:18.0 2001-09-27 09:28:18.0](facet.gif) |
has spin 1/2 | ![has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0 has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0](facet.gif) |
is a part of nucleon | ![2001-09-27 09:32:18.0 2001-09-27 09:32:18.0](facet.gif) |
has definition The hypothetical constituent of the elementary particles that interacts via glue forces. Originally only three quarks were hypothesized; today it appears that six are required. For a variety of theoretical reasons, free quarks can never be seen. | ![has source: Peat, D. 1988 Superstrings and the Search for a Theory of Everything, Contemporary Books, 2001-09-27 09:28:18.0 has source: Peat, D. 1988 Superstrings and the Search for a Theory of Everything, Contemporary Books, 2001-09-27 09:28:18.0](facet.gif) |
has definition Fundamental particle of which protons, neutrons and electrons are now thought perhaps to be made up. There are possibly three or four types of quark. It is even possible that quarks themselves may be made up of still more fundamental particles. | ![has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:28:18.0 has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:28:18.0](facet.gif) |
has definition A sub-atomic particle which is a fundamental building block of the hadrons. | ![has source: Clark, S. 1997 Towards the Edge of the Universe, Wiley, 2001-09-27 09:28:18.0 has source: Clark, S. 1997 Towards the Edge of the Universe, Wiley, 2001-09-27 09:28:18.0](facet.gif) |
has definition A fermion with fractional electric charge. | ![has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0 has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0](facet.gif) |
has definition A particle that is acted upon by the strong force. Quarks exist in six varieties: up, down, charm, strange, top, bottom and three "colors" (red, green, blue). | ![has source: Greene, B. 1999 The Elegant Universe, W.W. Norton and Co., New York, 2001-09-27 09:28:18.0 has source: Greene, B. 1999 The Elegant Universe, W.W. Norton and Co., New York, 2001-09-27 09:28:18.0](facet.gif) |
has definition One of the fundamental, indestructible particles of nature, out of which many other subatomic particles are made. Five types of quarks have been discovered, and it is believed that a sixth also exists. Quarks interact mainly via the strong nuclear force and the electromagnetic force. | ![has source: Lightman, A., Brawer, R. 1990 The Lives and Worlds of Modern Cosmologists, Harvard University Press, 2001-09-27 09:28:18.0 has source: Lightman, A., Brawer, R. 1990 The Lives and Worlds of Modern Cosmologists, Harvard University Press, 2001-09-27 09:28:18.0](facet.gif) |
has definition Fundamental particles from which all hadrons are made. According to the theory of quantum chromodynamics, protons, neutrons, and their higher-energy cousins are composed of trios of quarks, while the mesons are each made of one quark and one antiquark. Held together by the strong nuclear force, quarks are not found in isolation in nature today; see asymptotic freedom. | ![has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:28:18.0 has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:28:18.0](facet.gif) |
is a kind of parton | ![has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0 has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0](facet.gif) |
is a kind of fermion | ![has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0 has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:28:18.0](facet.gif) |
is a kind of charged particle | ![2001-09-27 09:28:18.0 2001-09-27 09:28:18.0](facet.gif) |
fermion | has quantum behavior Fermi-Dirac statistics | ![2001-09-27 09:28:03.0 2001-09-27 09:28:03.0](facet.gif) |
obeys exclusion principle | ![2001-09-27 09:28:03.0 2001-09-27 09:28:03.0](facet.gif) |
charged particle | is accelerated by electric or magnetic fields | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has charge non-zero | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
particle | has frequency inversely proportional to the wavelength | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has wavelength inversely proportional to its momentum | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has mass | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
hypothetical particle | has acceptance status hypothetical | ![2001-09-27 09:28:16.0 2001-09-27 09:28:16.0](facet.gif) |
physical object | has location or center of gravity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has velocity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has material | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |