Difference between revisions of "Flux Density"
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Flux Density
</dt>
The flux
(rate of flow) of any quantity, usually a form of energy, through
a unit area of specified surface. (Note that this is not a volumetric density
like radiant
density.) Compare luminous
density.
</dd>
''In radar, flux density commonly is referred to as power density.
It is essential to understand that the flux density of radiation is in no
sense a vector quantity, because it is the sum of the flux corresponding to
all ray directions incident upon one side of the unit area.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
