Abstract
IN virtue of the very low value of its interatomic forces, helium—discovered in the solar chromosphere in 1868 and obtained from terrestrial sources by Ramsay in 1895—represents the ideal gas more nearly than any other known substance, and is the thermometric gas par excellence, while its extremely low critical temperature and boiling-point furnish the means of descending the scale of temperature to the immediate neighbourhood of the absolute zero.
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KEESOM, W. The States of Aggregation of Condensed Helium1. Nature 122, 847–849 (1928). https://doi.org/10.1038/122847a0
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DOI: https://doi.org/10.1038/122847a0
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