Super-fluidity of helium II and attainme
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Piotr L. Kapitza
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Article
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1944
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Elsevier Science
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English
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When the temperature is 2.I9 ยฐ above the absolute zero, liquid helium passes through the phase of metamorphosis into so-called helium II. The author, in his research into the nature of liquid helium II, shows that its viscosity is at least one billion times smaller than the viscosity of water; thus