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Instruments that measure ultraviolet and/or visible light absorbance of a sample; they are based on the Beer-Lambert law, which states that the concentration of a solute is proportional to the absorbance of the sample. Accessories available.
The Variable-Angle Specular Reflectance Accessory can be used to obtain a spectrum of any flat, reflecting surface on plate or sheet material. Measurements of reflectance are useful in quality control of optical materials and for obtaining information about the crystalline structure of a material. The Variable-Angle Specular Reflectance Accessory can be used to: Measure reflection spectra of dielectrics at optimum angle Measure reflection-absorption spectra of thin films Measure refractive index and thickness of thin films Measure refractive indices from reflectance spectra using the Kramers-Kronig transformation
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