Consider
an uncertain physical property and a corresponding space describing the range
of values that the property can have (e.g., the configuration of a thermally
excited N particle system
and the corresponding 3N dimensional configuration space). The probability density function associated with a property is
defined over the corresponding space; its value at a particular point is the
probability per unit volume that the property has a value in an infinitesimal
region around that point.
Source
|