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  2. Prism lighting - Wikipedia

    en.wikipedia.org/wiki/Prism_lighting

    Prism lighting is the use of prisms to improve the distribution of light in a space. It is usually used to distribute daylight, and is a form of anidolic lighting. Prism lighting was popular from its introduction in the 1890s through to the 1930s, when cheap electric lights became commonplace and prism lighting became unfashionable.

  3. Chandelier - Wikipedia

    en.wikipedia.org/wiki/Chandelier

    A chandelier ( / ˌʃændəˈlɪər /) is an ornamental lighting device, typically with spreading branched supports for multiple lights, designed to be hung from the ceiling. [1] [2] Chandeliers are often ornate, and they were originally designed to hold candles, but now incandescent light bulbs are commonly used, [3] as well as fluorescent ...

  4. Cut glass - Wikipedia

    en.wikipedia.org/wiki/Cut_glass

    Cut glass chandelier in Edinburgh. Cut glass or cut-glass is a technique and a style of decorating glass. For some time the style has often been produced by other techniques such as the use of moulding, but the original technique of cutting glass on an abrasive wheel is still used in luxury products. On glassware vessels, the style typically ...

  5. Lead glass - Wikipedia

    en.wikipedia.org/wiki/Lead_glass

    Lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead (II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% ...

  6. Fresnel rhomb - Wikipedia

    en.wikipedia.org/wiki/Fresnel_rhomb

    A Fresnel rhomb is an optical prism that introduces a 90° phase difference between two perpendicular components of polarization, by means of two total internal reflections. If the incident beam is linearly polarized at 45° to the plane of incidence and reflection, the emerging beam is circularly polarized, and vice versa.

  7. Azelin chandelier - Wikipedia

    en.wikipedia.org/wiki/Azelin_chandelier

    Coordinates. 52°08′56″N 9°56′47″E  / . 52.1489°N 9.9464°E. / 52.1489; 9.9464. The Azelin chandelier 1018 A.D ( German: Azelinleuchter) is a Romanesque wheel chandelier, made in the 11th century for the Hildesheim Cathedral in Hildesheim, Germany, a UNESCO World Cultural Heritage site since 1985. It is the oldest of four extant ...