THE CRITICAL POINT, AND THE SIGNIFICANCE OF THE QUANTITY b IN THE EQUATION OF VAN DER WAALS.1

1914 ◽  
Vol 36 (4) ◽  
pp. 617-634 ◽  
Author(s):  
Theodore W. Richards
Keyword(s):  
Critical Point ◽  
Van Der Waals

Critical Point of Metals from the van der Waals Model

1971 ◽  
Vol 3 (1) ◽  
pp. 364-371 ◽  
Author(s):  
David A. Young ◽  
Berni J. Alder
Keyword(s):  
Critical Point ◽  
Van Der Waals ◽  
Van Der Waals Model

THE BAROMETRIC FORMULA FOR REAL GASES AND ITS APPLICATION NEAR THE CRITICAL POINT

1933 ◽  
Vol 9 (6) ◽  
pp. 637-640 ◽  
Author(s):  
R. Ruedy
Keyword(s):  
Molecular Weight ◽  
Critical Temperature ◽  
Temperature Gradient ◽  
Critical Point ◽  
Van Der Waals ◽  
Critical Value ◽  
Uniform Density ◽  
Van Der Waals Equation ◽  
Other Substances ◽  
Separation Of Isotopes

According to the theory of the continuity of liquid and gaseous states, as expressed for instance in van der Waals' equation, pronounced density differences may exist in a short column of fluid maintained, throughout its length, at the critical temperature. The point in the tube at which the density of the contents has decreased a given percentage from the critical value is the higher the larger the ratio of the critical temperature to molecular weight. For substances like neon the variations are so large that a measurable separation of isotopes may be expected at or near the critical point; for other substances the computed results are at least of the magnitude found by experiment. Also, according to the theory, in order to obtain, at or near the critical point, a column of gas of uniform density a temperature gradient must be allowed to exist along the column.

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