Abstract
A PIECE of straight glass tube—60 centimetres is a convenient length—is to be filled with the substance in a state of the greatest purity possible. It is to contain such a quantity of the substance that, at ordinary atmospheric temperatures, about 3 or 4 centimetres of the tube are occupied by steam of the substance, and the remainder liquid. Fix the tube in an upright position, with convenient appliances for warming the upper 10 centimetres of the length to the critical temperature, or to whatever higher or lower temperature may be desired; and for warming a length of 40 centimetres from the bottom to some lower temperature, and varying its temperature conveniently at pleasure.
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On a Method of Determining the Critical Temperature for any Liquid and its Vapour Without Mechanism 1 . Nature 23, 87–88 (1880). https://doi.org/10.1038/023087c0
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DOI: https://doi.org/10.1038/023087c0