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Annealing is a process of slowly cooling hot glass objects after they have been formed, to relieve residual internal stresses introduced during manufacture. Especially for smaller, simpler objects, annealing may be incidental to the process of manufacture, but in larger or more complex products it commonly demands a special process of annealing in a temperature-controlled kiln known as a lehr. [1]
Architectural glass is glass that is used as a building material. It is most typically used as transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature.
The manufacturing process for soda–lime glass consists in melting the raw materials, which are the silica, soda, lime (in the form of (Ca(OH) 2), dolomite (CaMg(CO 3) 2, which provides the magnesium oxide), and aluminium oxide; along with small quantities of fining agents (e.g., sodium sulfate (Na 2 SO 4), sodium chloride (NaCl), etc.) in a glass furnace at temperatures locally up to 1675 ...
Barge glass works: Jacob Barge began producing glass in 1760 in the Province of Pennsylvania. [116] The works was located in Bucks County close to Philadelphia. Archeological evidence indicates that window glass was made using the cylinder method. Various types of bottles were also made. The glass works appears to have operated through 1784. [117]
Neoplasticism (or Neo-plasticism), originating from the Dutch Nieuwe Beelding, is an avant-garde art theory proposed by Piet Mondrian [a] in 1917 and initially employed by the Dutch De Stijl art movement. The most notable proponents of this theory were the painters Mondrian and Theo van Doesburg. [1] Neoplasticism advocated for a purified ...
Lehr (glassmaking) In the manufacture of float glass, a lehr oven is a long kiln with an end-to-end temperature gradient, which is used for annealing newly made glass objects that are transported through the temperature gradient either on rollers or on a conveyor belt. The annealing renders glass into a stronger material with fewer internal ...
The primary purpose of glazing in art framing is to clearly exhibit the work while physically protecting it from damaging factors such as light , humidity, heat, and soiling. Laminated glass and some acrylic may be used to protect against physical damage from glass breakage and to offer protection from a malicious attack.
Fall colors are the shades that accompany the autumnal season, inspired by how the leaves change from green to an array of warm hues: Red. Orange. Yellow. Brown. The beauty of fall lies in the ...
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