Distribution Function
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Distribution Function
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The density
function or number of particles per unit volume of phase
space. The distribution function is a function of the three space
coordinates and the three velocity coordinates.
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A point in phase space represents a given position in ordinary space
and a given velocity in velocity
space. Therefore, the distribution function evaluated at such a point is
the number or average density of particles per cubic length and cubic velocity
that have the position and the velocity which is represented by the point.
Distribution function represents the average density over a reasonably long
time, or the most probable distribution of particles at a particular time.
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use