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Highest listing price on eBay: $7,400. Uranium glass, often called “vaseline glass” due to its yellow-green glow under UV light, exists in its own ultra-unique realm of Depression glass. This ...
Low-iron glass is a type of high-clarity glass that is made from silica with very low amounts of iron. This low level of iron removes the greenish-blue tint that can be seen especially on larger and thicker sizes of glass. [1] Low-iron glass is used for aquariums, display cases, some windows, and other applications where clarity is desired. [2]
Low-iron, or water white glass, is made using special iron free silica, and is generally only available in 2.0 millimetres (0.079 in) thicknesses for picture framing applications. Because low iron glass light absorption can be as low as 0.5%, compared to about 2% for clear glass, the light transmission will be better than clear glass. Low iron ...
These lenses are used for UV photography, as the quartz glass can be transparent at much shorter wavelengths than lenses made with more common flint or crown glass formulas. Fused quartz can be metallised and etched for use as a substrate for high-precision microwave circuits, the thermal stability making it a good choice for narrowband filters ...
Zerodur has both an amorphous (vitreous) component and a crystalline component. Its most important properties [21] are: . The material exhibits a particularly low thermal expansion, with a mean value of 0 ± 0.007×10 −6 K −1 within the temperature range of 0 to 50 °C.
Ultra low expansion glass has an coefficient of thermal expansion of about 10 −8 /K at 5–35 °C. [2] It has a thermal conductivity of 1.31 W/(m·°C), thermal diffusion of 0.0079 cm 2 /s, a mean specific heat of 767 J/(kg·°C), a strain point of 890 °C [1634 °F], and an estimated softening point of 1490 °C [2714 °F], an annealing point ...
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Tempered or toughened glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass.
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