Instruments for Reflectance Spectroscopy
The measurement of reflectance is one of the most difficult problems of spectroscopy. Reflectance is not a simple specific property of a sample as is absorbance or polarisation. Reflected light is influenced by many other parameters such as illuminating light, illuminating aperture, surface texture of the sample, polarisation and absorbance of the sample. The light can be reflected diffusely, specularly or as a mixture of both. The samples can be flat, curved or irregularly shaped.
KeywordsCotton Fabric Reflectance Spectroscopy Specular Reflectance Sphere Geometry Measuring Geometry
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