Determinations of reflectances and visibilities of surfaces

The aim of this study is to determine the reflectances and the visibilities of inner surfaces painted with mat and glossy dyes for different illuminants. As a result of this determination, the change of reflectances and visibilities of surfaces in respect of the illuminants is brought out. The study is consist of nine main chapter and an additonal part. In chapter 1, by entering into the subject, the aim and content of the working has been defined. In chapter 2, type of reflection from surfaces has been explained under the title of specular reflection, isotropic diffuse reflection, diffuse/ spread reflection, mixed reflection and retroreflection. In chapter 3, different approaches about measuring reflected light have been discussed. In chapter 4, the speciality of spectrophotometer which is being used for measuring reflectances of the surfaces, geometry of the measuring and condition of the measuring have been discussed. In chapter 5, spectral characteristic of the illuminants have been expressed. Total reflectance and diffuse reflectance of the pattern surfaces that have been taken from three paint producer firm, have been defined for different illuminants and presented with charts and graphics. In chapter 6, average reflectance has been calculated for the first twenty reflection that occured depend on running reflection of the light on inner surface and method which has been used for the calculation has been explained. In chapter 7, selected ten pattern surface?s changeable reflectances according to light source has been compared about energy consumption. In chapter 8, visibility factors belong to pattern surfaces has been calculated and method which has been used for the calculation has been explained. In chapter 9, in conclusion, reflectances, where at visibility factors of the pattern surfaces which have been painted with mat and glossy dyes are changing according to illuminating light source. Also, the results have been analyzed in respect of energy consumption. In additonal part, all value for the pattern surfaces which have been determined for different illuminants and picture of the patterns which have been taken in sunny clear sky conditions have been presented. Keywords: Reflectance, visibility factor, illuminant.