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Pyrex (trademarked as PYREX and pyrex) is a brand introduced by Corning Inc. in 1915, initially for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware. It was later expanded in the 1930s to include kitchenware products made of soda–lime glass and other materials. [1]
Corelle, a brand name for break-resistant glass dishware also originally created by Corning Glass Works, has offered matching designs to many CorningWare patterns. [6] Care must be made to distinguish between Corning Ware cookware and tableware marketed under the Corelle and Pyrex brand names, as the thermal properties of the products are quite ...
The softening point (temperature at which viscosity is approximately 10 7.6 poise) of type 7740 Pyrex is 820 °C (1,510 °F). [8] Borosilicate glass is less dense (about 2.23 g/cm 3) than typical soda–lime glass due to the low atomic mass of boron. Its mean specific heat capacity at constant pressure (20–100 °C) is 0.83 J/(g⋅K), roughly ...
An Erlenmeyer flask, also known as a conical flask (British English) [1] or a titration flask, is a type of laboratory flask with a flat bottom, a conical body, and a cylindrical neck. It is named after the German chemist Emil Erlenmeyer (1825–1909), who invented it in 1860. [2] Erlenmeyer flasks have wide bases and narrow necks. [3]
As previously with round lamps, the US permitted only two standardized sizes of rectangular sealed-beam lamp: A system of two 200 by 142 mm (7.9 by 5.6 in) high/low beam units corresponding to the existing 7-inch round format, or a system of four 165 by 100 mm (6.5 by 3.9 in) units, two high/low and two high-beam. corresponding to the existing ...
Having a typical internal width of 2.44 m (96 + 1 ⁄ 8 in), [89] (a gain of ~ 10 centimetres (3 + 15 ⁄ 16 in) over the ISO-usual 2.34 m (92 + 1 ⁄ 8 in), [90] gives pallet-wide containers a usable internal floor width of 2.40 m (94 + 1 ⁄ 2 in), compared to 2.00 m (78 + 3 ⁄ 4 in) in standard containers, because the extra width enables ...
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A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...
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