Concept information
Terme préférentiel
van der Waals equation
Définition(s)
- An equation of state that satisfactorily describes the behavior of real gas over a wide range of temperatures and pressures. It is derived from considerations based on kinetic theory, taking into account to a first approximation the size of a molecule and the cohesive forces between molecules : (P + a/V² (V - b) = RT, where P, V, and T are pressure, volume, and temperature and R the gas constant. a and b are characteristic constants for a given substance. For a = b = 0, the van der Waals equation reduces to the characteristic equation of an ideal gas. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=van+der+Waals+equation&formSubmit=Search&showAll=1)
Concept(s) générique(s)
Synonyme(s)
- van der Waals equation of state
Traductions
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français
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équation d'état de van der Waals
URI
http://data.loterre.fr/ark:/67375/MDL-P7C4J1BF-G
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