ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Since then, Kapitza3 has built a helium liquefier incorporating an expansion engine in which a loose-fitting piston allowed gas to escape and so provide lubrication. Several people have built liquefiers based on Kapitza's original work, and Collins4, in particular, has developed this type of ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/172581a0
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