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physical object > natural object > particle > boson > positronium

positronium
subject			fact

positronium	has definition A positron and electron bound together electrostaticaly.
	is an instance of neutral particle
	is an instance of radioactive particle
	is an instance of boson
boson	has quantum behavior Bose-Einstein statistics
	has spin integral
radioactive particle	has desintegration energy the total energy produced when the particle decays
	has decay products the products produced immediately after decay
	has lifetime The average time in which a particle decays
neutral particle	is not accelerated by electric or magnetic fields
	has charge 0
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

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