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What is the difference between helium I and II?

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When the temperature reaches 2.19°K, the properties of liquid helium change abruptly, so much so that ordinary helium is known as helium I and helium below this temperature is known as helium II.

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Get more facts and information about superfluidity . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

Similar questions: Why are helium I and II different? What are the existing differences between helium I and II? [ Hide these questions ]

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