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influx geometry
irradiation geometry
incidence geometry
angular distribution of the radiation incident on the sample being measured with respect to the centre of the sampling aperture
Note 1 to entry: The influx geometry and efflux geometry together specify the geometric nature of the measurement for reflectance and transmittance measurements.
Note 2 to entry: This entry was numbered 17-577, 17-611, and 17-571 in CIE S 017:2011.