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physical object > natural object > particle > charged particle > electron > free electron > delta-ray

delta-ray
subject			fact

delta-ray	has definition A recoil electron ejected from an atom by an energetic charged particle. Delta-rays appear as branches in the main track of a cloud chamber.
	is a kind of free electron
electron	has antiparticle positron
	has charge -1
	is a part of element
lepton	has spin 1/2
charged particle	is accelerated by electric or magnetic fields
fermion	has quantum behavior Fermi-Dirac statistics
	obeys exclusion principle
particle	obeys uncertainty principle
	has frequency inversely proportional to the wavelength
	has wavelength inversely proportional to its momentum
	has mass
physical object	has location or center of gravity
	has angular momentum
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Up: free electron