Whiteness is measured in terms of diffuse reflectance, which is the ratio of reflected light measured at 90deg. after passing through a suitable filter and the incident light that is generally at 45o to the surface of the samplePaper, Textiles, Food...
Whiteness is measured in terms of diffuse reflectance, which is the ratio of reflected light measured at 90deg. after passing through a suitable filter and the incident light that is generally at 45o to the surface of the samplePaper, Textiles, Food...