منابع مشابه
Specular Gloss
.........................................................................................................................................v
متن کاملLuminance-based specular gloss characterization.
Gloss is a feature of visual appearance that arises from the directionally selective reflection of light incident on a surface. Especially when a distinct reflected image is perceptible, the luminance distribution of the illumination scene above the sample can strongly influence the gloss perception. For this reason, industrial glossmeters do not provide a satisfactory gloss estimation of high-...
متن کاملNew Primary Standard for Specular Gloss Measurements
A new primary specular gloss standard has been developed at the National Institute of Standards and Technology to overcome the disadvantages of black glass. This new standard is a high-purity BaK50 glass with good mechanical durability and homogeneity. In addition, the index of refraction nD = 1.5677 is close to the value specified for the theoretical standard, and the dispersion characteristic...
متن کاملNIST Reference Goniophotometer for Specular Gloss Measurements
The current global economy has increased international competition and the need to improve the quality of many manufactured products. Appearance measurements are used to determine the quality and acceptability of a variety of products from textiles to machine finishes. Since the manufacture and marketing of these products is international in scope, the methods, instruments, and standards for th...
متن کاملChemical durability, specular gloss, and transmittance of optical glasses.
The chemical durability of three types of optical glass (BSC 517, BaC 572, and F 620) and chemical Pyrex llave been studied o\"er an extended pH range by means of an interfe rometer proced ure. The accompanying effect on the appearance (gloss retained) and on the transmittance of the specimens has also been determ ined. The results illustrate the con fu sion t ll at might a rise from choosin g ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1950
ISSN: 0091-0635
DOI: 10.6028/jres.044.053