Virial

(redirected from Virial theorem)
Also found in: Encyclopedia, Wikipedia.

Vir´i`al


n.1.(Physics) A certain function relating to a system of forces and their points of application, - first used by Clausius in the investigation of problems in molecular physics.
References in periodicals archive ?
From the virial theorem, which applies to stable systems composed of many bodies, we get:
The virial theorem only considers the potential energy between the bodies of the system.
Weidmann, "The virial theorem and its application to the spectral theory of Schrodinger operators," Bulletin of the American Mathematical Society, vol.
Clausius 1870 [9] was the first one who had invented the virial theorem (the effective force of heat is proportional to the absolute temperature), which is a simple theory could be used in most of physics fields.
The virial theorem allows average kinetic energy to be calculated even for extremely complicated mechanical systems for which exact solution is not possible--just the kind of simplification/approximation students need to learn.
A role of the classical virial theorem in establishing of the equivalence between averaged over time gravitational mass and energy is discussed in detail in Refs.
Assuming that the virial theorem holds for galaxies, the velocity v is derived from Eq.