Attenuation Coefficient 2
Attenuation Coefficient 2 :
A measure of the space rate of diminution or attenuation, of any transmitted energy. This quantity a may be identified in a form of Bouguer's Law (or Beer's Law); dl = - aldr, or I = Ioe-ax where I is the flux density at the selected point in space, lo is the flux density at the sourse, x is the distance from the sourse, and a is the attenuation coefficient. In general, the attenuation coefficient is specified only when the attenuation is known to be due to both absorption and scattering or when it is impossible to determine which is the cause. More common is the use of either the absorption coefficient or the scattering coefficient
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