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physical object > natural object > particle > charged particle > quark > light quark > down

down
subject			fact

down	has charge -1/3
	has definition A flavor of quark.
	is an instance of light 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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