The apparent thermal radiation properties of an isothermal V-groove with specularly reflecting walls

Th e reRe cti on of a parall e l beam of light in c id e nt in a V groove is trea te d for the case wh e n th e wa ll s are s pec ularly r e Recting. Methods of calculat ing apparent re Rec tances and absorpta nces are given. Experiments have bee n pe rform ed to tes t the th eo retical calc ulation s, and th e agreement has bee n found to be satisfac tory.