[7.5.3.5] τ(ωi;ωt)
The ratio of transmitted flux collected through a conical solid angle to the incident flux limited to a conical solid angle.
Note: The direction and extent of each cone must be specified.
[7.5.3.5] τ(ωi;ωt)
The ratio of transmitted flux collected through a conical solid angle to the incident flux limited to a conical solid angle.
Note: The direction and extent of each cone must be specified.