منابع مشابه
Surface Microroughness of Optical Glasses
The Center for Optics Manufacturing (COM) at the University of Rochester has made significant advances in the fabrication of precision optical components using deterministic microgrinding with rigid, computer-controlled machining centers and high-speed tool spindles. In deterministic microgrinding, the infeed rate of the microgrinding tool across the optical workpiece is optimized and controlle...
متن کاملSurface tensions of some binary fused salt systems
The surface tensions of eight pure fused salts and nine binary mixtures were measured by the maximum bubble pressure method. Surface tension showed essentially linear variation with temperature in all cases. This report is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ameslab_iscreports/171
متن کاملSurface tensions
With so many fish stocks under pressure, increasing catch levels for one population by 30 per cent might appear catastrophic. But European fishing ministers believe such a move might help tackle two problems. Fishermen in the North Sea will be able to catch more cod this year, but cod fisheries elsewhere around Europe will be further restricted. EU ministers agreed late last month the fish quot...
متن کاملOptical and Thermal Properties of Mixed Alkali Phosphate Based Glasses
Glassy samples with a composition of 40P2O5–30V2O5–(30-x)Li2O– xK2O, 0<x<30 (mol %) were prepared by the conventional melt quenching technique in two forms of bulk and blown film. X-ray diffraction patterns corroborated the amorphous feature of the samples. Density of samples was investigated by using Archimedes principle. Based on absorption and reflection spectra, indirect a...
متن کاملNano-Structured Optical Glasses
A variety of oxide glasses and glass-ceramics that contain thermally or optically developed nanostructures will be described along with the properties that derive from the nano-phase, or structural rearrangement. The derived properties include photosensitive, photochromic, photoadaptable color, photorefractive (induced refractive index), photo-machinable, and polarizing.
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1947
ISSN: 0091-0635
DOI: 10.6028/jres.038.012