helium II: Definition from Answers.com

n.
Liquid helium existing as a superfluid below the transition point of approximately 2.2°K at 1 atmosphere and having extremely low viscosity and extremely high thermal conductivity.

	lambda point
	fifth sound (cryogenics)
	first sound (cryogenics)

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	I i i i ii i i i i i i i i i i i i i i i i ii i i i i ii i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i? Read answer...
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	Where is helium in helium ballons from?
	Why was helium given the name helium?
	Why is helium called helium?