diffuse transmission

diffuse transmission

[də′fyüs tranz′mish·ən]
(physics)
Transmission of electromagnetic or acoustic radiation in all directions by a transmitting body.
References in periodicals archive ?
Unlike liquids, where you can control the pathlength or solids (tablets), where either diffuse transmission or reflection may be used, semi-solids present unique process analysis problems.
As the time of [H.sub.2]-plasma exposure increased from 0 to 900 seconds, the total transmission of FTO samples decreased from 81.41% to 46.71% at the wavelength of 550 nm, and the diffuse transmission exhibited the same trend.
Optical properties such as haze, total transmission, and diffuse transmission of samples were measured in a 1-mm-thick injection molded plaques on ColorQuest II Hazemeter (HunterLab, USA) as per ASTM D1003-95 standard.
where total transmission (TT) is the sum of the diffuse transmission (DT) and the direct transmission.
However, bias error arises in the case of diffuse transmission measurements because the scattered radiation originating at the sample is not distributed uniformly over the surface of the integrating sphere and the radiation sensed by the detectors includes the first reflection of this non-uniform distribution.
Recognizing that [[tau].sub.[bb].sup.m] may decrease more sharply than [[tau].sub.[bt].sup.m] with respect to [theta] it was anticipated that the diffuse transmission component, [[tau].sub.[bd].sup.m], might increase with [theta].
Two different NIR sampling modes, diffuse reflectance and diffuse transmission, are commonly used for a variety of tablets.
Other beliefs may be deemed heretical if they involve the contradiction of scriptural texts handed down through diffuse transmission (tawatur) or subject to consensus ([TEXT NOT REPRODUCIBLE IN ASCII]), engendering a preponderant probability that they represent the actual words or practices of the Prophet.
However, even these units offer only specular transmission mode, while higher-end benchtops have both specular and diffuse transmission capability - the latter being considered more precise.
First, some diffuse transmission can be expected, however small, as [theta] [right arrow] 90[degrees] for every roller blind material.
Thus, noting that the portion of incident radiation intercepted by the structure is 1 - [A.sub.o] = 1 - [[tau].sub.bb]([theta] = 0) and also noting that the structure only produces diffuse transmission, the apparent transmittance of the roller blind structure,[[tau].sup.str], is defined:

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