Lambda point: Difference between revisions
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== See also == |
== See also == |
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* [[Lambda point refrigerator]] |
* [[Lambda point refrigerator]] |
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== References == |
== References == |
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Revision as of 18:02, 15 April 2011
The Lambda point is the temperature (approximately 2.17 K) below which normal fluid helium (helium I) transitions to superfluid helium II. More precisely, there is a lower lambda point at 2.172 K, 0.0497 atm, and an upper one at 1.76 K, 29.8 atm.[1][dead link]
The point's name derives from the graph that results from plotting the specific heat capacity as a function of temperature (for a given pressure), which resembles the Greek letter lambda. The specific heat capacity tends towards infinity as the temperature approaches the lambda point.
See also
References
External links
- What is superfluidity? (includes a graph)
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