ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The first is the helium-density method in which measurements are made of the volume of helium displaced by a solid. Helium is used as the displacement fluid because, with certain exceptions4'5, it is negligibly adsorbed at room temperature. Helium densities of nuclear graphites have always, as far ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/218948a0
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