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Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...
The action in Fourcault happens "at the draw", or area where the glass is taken from a liquid state into the start of the process needed to make it into flat glass. At the bottom of the draw is the "pit" or place where the molten glass is sufficiently cooled to be close to forming temperature.
Caneworking refers to the process of making cane, and also to the use of pieces of cane, lengthwise, in the blowing process to add intricate, often spiral, patterns and stripes to vessels or other blown glass objects. Cane is also used to make murrine (singular murrina, sometimes called mosaic glass), thin discs cut from the cane in cross ...
The new Jena optical glass also opened up the possibility of increased performance of photographic lenses. The first use of Jena glass in a photographic lens was by Voigtländer, but as the lens was an old design its performance was not greatly improved.
Ages 7-12 will learn about optical illusions by creating an animated toy using the properties of motion. Registration is required. How to Macramé at the Central Library, 6 p.m. Tuesday, Feb. 20 ...
Ries spent the next two years under the mentorship of Littleton. Ries's interest in glass's optical properties grew, and began carving cold glass instead of blowing hot glass. Tools to sculpt large blocks of glass weren't available at the time, so Ries independently developed much of the equipment he needed during his spare time. [6]
Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations. Parameters include surface profile types (spherical, aspheric, holographic, diffractive, etc.), as well as radius of curvature, distance to the next surface, material type and optionally tilt and decenter.
The Shaker & Spoon box would make a great gift for the aspiring mixologist in your life. Each box comes with three unique cocktail recipes, provided by top bartenders, and the ingredients to make ...