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Much of the light striking the surface of a layer of milk is reflected.The total reflection is made up of a specular reflection from the surface, which is independent of the thickness of layer, and a diffuse reflection from the interior, which depends upon the thickness of layer.Diffuse reflection data are of value because they provide a basis for calculating the amount of light absorbed by milk and for estimating the effective depth of penetration of light into milk.Hence such data are presented in this paper.
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Burgess et al. (1955) studied this question.
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