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  2. Picture framing glass - Wikipedia

    en.wikipedia.org/wiki/Picture_framing_glass

    Due to widespread availability and low cost, Soda Lime Glass is most commonly used for picture framing glass. Glass thicknesses typically range from 1.8 to 2.5 millimetres (0.071 to 0.098 in). Clear glass has light transmission of approximately 90%, absorption of approximately 2%, and reflection of approximately 8%. Whereas absorption can be ...

  3. Picture frame - Wikipedia

    en.wikipedia.org/wiki/Picture_frame

    View of a frame-maker's workshop, oil on canvas, circa 1900 The elaborate decoration on this frame may be made by adhering molded plaster pieces to the wood base.. A picture frame is a container that borders the perimeter of a picture, and is used for the protection, display, and visual appreciation of objects and imagery such as photographs, canvas paintings, drawings and prints, posters ...

  4. Claude glass - Wikipedia

    en.wikipedia.org/wiki/Claude_glass

    Claude Lorrain mirror in shark skin case. A Claude glass (or black mirror) is a small mirror, slightly convex in shape, with its surface tinted a dark colour. Bound up like a pocket-book or in a carrying case, Claude glasses were used by artists, travelers and connoisseurs of landscape and landscape painting.

  5. Ogee - Wikipedia

    en.wikipedia.org/wiki/Ogee

    A building's surface detailing, inside and outside, often includes decorative moulding, and these often contain ogee-shaped profiles—consisting (from low to high) of a concave arc flowing into a convex arc, with vertical ends; if the lower curve is convex and higher one concave, this is known as a Roman ogee, although frequently the terms are used interchangeably and for a variety of other ...

  6. Curved mirror - Wikipedia

    en.wikipedia.org/wiki/Curved_mirror

    Convex mirror lets motorists see around a corner. Detail of the convex mirror in the Arnolfini Portrait. The passenger-side mirror on a car is typically a convex mirror. In some countries, these are labeled with the safety warning "Objects in mirror are closer than they appear", to warn the driver of the convex mirror's distorting effects on distance perception.

  7. Binoculars - Wikipedia

    en.wikipedia.org/wiki/Binoculars

    At 16 atmosphere to optical glass surfaces passes, a 4% reflection loss theoretically means a 52% light transmission (0.96 16 = 0.520) and a 1.5% reflection loss a much better 78.5% light transmission (0.985 16 = 0.785). Reflection can be further reduced over a wider range of wavelengths and angles by using several superimposed layers with ...

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