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Dielectric mirror. A dielectric mirror, also known as a Bragg mirror, is a type of mirror composed of multiple thin layers of dielectric material, typically deposited on a substrate of glass or some other optical material. By careful choice of the type and thickness of the dielectric layers, one can design an optical coating with specified ...
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 ...
A Kozyrev mirror (Russian: Зеркало Козырева, romanized: Zerkalo Kozyreva), in Russian esoteric literature from the 1990s, is a pseudoscientific device made from long sheets of aluminum (sometimes from glass, or a reflecting, mirror-like material) curled into a cylindrical spiral. It is alleged to focus different types of ...
Speculum metal. Speculum metal is a mixture of around two-thirds copper and one-third tin, making a white brittle alloy that can be polished to make a highly reflective surface. It was used historically to make different kinds of mirrors from personal grooming aids to optical devices until it was replaced by more modern materials such as metal ...
Speculum metal is a very hard high-tin bronze-type alloy, with about 30% tin rather than the typical 12–15%. It polishes well to give very good reflectivity, and was important in Early Modern telescopes and other uses. Its use in mirrors may date back more than 2000 years in China [8] although it could also be an invention of western ...
Electroplating, also known as electrochemical deposition or electrodeposition, is a process for producing a metal coating on a solid substrate through the reduction of cations of that metal by means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution ...
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