Characteristics affecting light

Characteristics of People That Affect Lighting Hazards... 

Besides intensity and energy, another characteristic of light that can be affected when light interacts with matter and can, thus, be used on the characterization of materials is its polarization. The best known technique that uses the polarization of light to characterize materials is the ellipsometry. In ellipsometry we measure the change on the state of polarization of light upon reflection by or transmission through a sample, which depends on its complex dielectric function. 

User-Related Properties. The most important element in the player s contact with the surface is traction. Shoe traction for light-duty consumer purposes need address only provision of reasonable footing. The frictional characteristics are obviously of much greater importance in surfaces designed for athletic use. For specialized surfaces such as a track, shoe traction is especially critical. With grass-like surfaces, traction is significantly affected by pile density and height, and other aspects of fabric constmction. 

In using fiber optics the designer is mainly concerned with a standardized material which has specific characteristics in terms of optical performance. Fiber optics made of plastics can be affected by exposure to the environment with deterioration of performance. Heat is an important environmental factor and the most likely cause of damage in optical applications. The heat can be generated by the light sources used. Some of the infrared generated by light sources can be removed with the use of appropriate filters. 

Dishwashing foam stability performance of an LAS-based light-duty liquid (LDL) is strongly affected by the carbon chain distribution, by water hardness, and, under some conditions, by phenyl isomer distribution. Foaming characteristics of C)2 phenyl isomer blends have been reported previously for conditions where LAS is the single anionic surfactant in the formulation (phosphate-built laundry powder) and the level of residual water hardness is low [30,31]. Under these conditions the internal phenyl isomers of C,2 LAS gave better foam performance than the 2-phenyl isomer. 

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