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physical object > natural object > particle > charged particle > quark > heavy quark > charm

charm
subject			fact

charm	has charge 2/3
	has definition The fourth flavor (i.e. type) of quark, the discovery of which in 1974 contributed both to the acceptance of the reality of quarks and to our understanding of their dynamics. The charmed quark exhibits a property called "charm" which is conserved in strong interactions.
	has definition The fourth flavor of quarks. Predicted by theory, charmed quarks were discovered in 1974.
	has definition The property that distinguishes one of the types of quarks. At present, there are six types of quarks known, one of which is the "charmed" quark. (See quark.)
	is an instance of heavy quark
quark	has antiparticle antiquark
	has spin 1/2
	is a part of nucleon
fermion	has quantum behavior Fermi-Dirac statistics
	obeys exclusion principle
charged particle	is accelerated by electric or magnetic fields
particle	has frequency inversely proportional to the wavelength
	has wavelength inversely proportional to its momentum
	has mass
hypothetical particle	has acceptance status hypothetical
physical object	has location or center of gravity
	has angular momentum
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

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