van der Waals equation

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van der Waals equation

n.
An equation of state that relates the pressure, volume, and absolute temperature of a gas taking into account the finite size of molecules, and their intermolecular attraction, having the form RT = (P + av-2)(v - b), where R is the gas constant, T is the absolute temperature, P is the pressure, v is the volume, and a and b are constants.

[After Johannes Diderik van der Waals.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

van der Waals equation

(ˈvæn də ˌwɑːlz)
n
(General Physics) an equation of state for a non-ideal gas that takes account of intermolecular forces and the volume occupied by the molecules of the gas
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
After plotting the isobars one sees that when above the critical pressure there is only an "ideal gas" phase, when below the critical pressure, there are two stable regions corresponding, respectively, to large/small black hole phases with an unstable medium region, which implies the existence of the large/small black hole phase transition; this thermal behavior of black hole is in analogy to the one of van der Waals gas. The effects of [beta] and [Q.sub.YM] on critical pressures are also considered and displayed in the isobaric plots.
Another interesting model of dark energy may be Van der Waals gas which could be accounted as a fluid with unusual EoS or could be thought of as a fluid satisfying more general form of EoS; that is, F([rho], P) = 0 [52].