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One Philadelphia woman didn't need an instruction manual to make her own solar specs -- all she needed was some tape and a couple pairs of normal shades.
XpanD 3D is a manufacturer of shutter glasses, with over 1000 cinemas currently using XpanD glasses. [21] With the release of this technology to the home-viewer market as of 2009, many other manufacturers are now developing their own LC shutter glasses, such as Unipolar International Limited, Accupix Co., Ltd, Panasonic , Samsung , and Sony .
A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation.
Wood's glass has lower mechanical strength and higher thermal expansion than commonly used glasses, making it more vulnerable to thermal shocks and mechanical damage. [ citation needed ] The nickel and barium oxides are also chemically reactive, with tendency to slowly form a layer of hydroxides and carbonates in contact with atmospheric ...
Looking at eclipse without proper glasses is dangerous. Luckily, there are DIY options for those who forgot to order a pair in time for April 8.
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Photosensitive glass, also called photostructurable glass (PSG) or photomachinable glass, is a glass in the lithium-silicate family of glasses onto which images can be etched using shortwave radiations, such as ultraviolet. [1] Photosensitive glass was first discovered by S. Donald Stookey in 1937. [2] [3] [4]
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