Diffuse Reflectance of Powders
Dimitrije Radjenović *
Zemun Gymnasium, Gradski Park 1, 11080 Belgrade, Serbia.
Biljana Stojičić
Zemun Gymnasium, Gradski Park 1, 11080 Belgrade, Serbia.
Branislav Radjenović
Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia.
Marija Radmilović-Radjenović
Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia.
*Author to whom correspondence should be addressed.
Abstract
The propagation of light through powders differs significantly from the propagation of light in a homogeneous material, since the light scatters off points in its path. Colors of powders are related to the fineness of the powder, when the powder is illuminated with white light. As Fourier transform infrared has become more common, the diffuse reflection method has become widely used. Diffuse reflectance is an excellent sampling tool for powdered materials.
Keywords: Powder, diffusive reflectance, absorbance, reflectance.