Search results
Results from the WOW.Com Content Network
Rabbi Yehezkel Landau, in Noda B'Yehuda, first edition, Yore Deah 26, for example, permits such beverages. [9] This is the position followed by many kashrut-observant Jews today. [citation needed] The similar-sounding names has resulted in confusion between isinglass and waterglass, especially as both have been used to preserve eggs.
Container glass is a type of glass for the production of glass containers, such as bottles, jars, drinkware, and bowls. Container glass stands in contrast to flat glass (used for windows , glass doors, transparent walls, windshields ) and glass fiber (used for thermal insulation , in fiberglass composites, and optical communication ).
[1] [2] Warm glass is rolled on the marver, both to shape it and as a means of temperature control. [ 3 ] With a high specific heat capacity , the surface absorbs heat from the glass; because of the relatively slow flow of heat through the glass, it does so particularly from the outermost material, forming a more viscous skin.
Batch processing is one of the initial steps of the glass-making process. The batch house simply houses the raw materials in large silos (fed by truck or railcar), and holds anywhere from 1–5 days of material. Some batch systems include material processing such as raw material screening/sieve, drying, or pre-heating (i.e. cullet). Whether ...
The refractive, reflective and transmission properties of glass make glass suitable for manufacturing optical lenses, prisms, and optoelectronics materials. Extruded glass fibres have applications as optical fibres in communications networks, thermal insulating material when matted as glass wool to trap air, or in glass-fibre reinforced plastic ...
The ingredients used to make the glass were lower-cost than those used to make lead glass. In addition, the glass hardened faster, meaning the workforce was forced to shape or press it quicker—lowering costs for labor in addition to lower costs for ingredients. [68] This new formula for glass quickly replaced the recipe consisting of lead at ...
Frit. A frit is a ceramic composition that has been fused, quenched, and granulated.Frits form an important part of the batches used in compounding enamels and ceramic glazes; the purpose of this pre-fusion is to render any soluble and/or toxic components insoluble by causing them to combine with silica and other added oxides. [1]
Foam glass or expanded glass is a porous glass foam material. It is used as a light weight, moisture- and fireproof building material with thermal and acoustic insulating properties. It is made by heating a mixture of crushed or granulated glass and a blowing agent (chemical foaming agent ), often carbon or carbonates such as limestone .