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USE OF LIQUID SURFACES AS STANDARDS OF SPECULAR GLOSS *
Author(s) -
Moore Dwight G.,
Hunter Richard S.
Publication year - 1941
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1941.tb14843.x
Subject(s) - gloss (optics) , specular reflection , materials science , optics , fresnel equations , ceramic , refractive index , composite material , optoelectronics , physics , coating
A bstract It is possible to flow a film of any one of several liquids on the rough ground or sandblasted face of a black ceramic body and to use the surface of the film as a standard of specular gloss. The specular gloss of the film may be computed from the angle of reflection and the refractive index of the liquid by means of the Fresnel equation. The technique described in this paper was developed for use with the Hunter multipurpose reflectometer to avoid the inaccuracies of specular‐gloss measurements which result when the polished black glass surfaces heretofore employed as working standards become abraded in use.