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  2. Bracket (architecture) - Wikipedia

    en.wikipedia.org/wiki/Bracket_(architecture)

    A classically detailed bracket at the chapel of Greenwich Hospital, London Bracket for a shelf or hanging items. A bracket is a structural or decorative architectural element that projects from a wall, usually to carry weight and sometimes to "strengthen an angle". [1] [2] It can be made of wood, stone, plaster, metal, or other media.

  3. Corbel - Wikipedia

    en.wikipedia.org/wiki/Corbel

    In architecture, a corbel is a structural piece of stone, wood or metal jutting from a wall to carry a superincumbent weight, [1] a type of bracket. [2] A corbel is a solid piece of material in the wall, whereas a console is a piece applied to the structure. A piece of timber projecting in the same way was called a "tassel" or a "bragger" in ...

  4. Mirror (dinghy) - Wikipedia

    en.wikipedia.org/wiki/Mirror_(dinghy)

    The Mirror is a type of popular sailing dinghy with more than 70,000 built. The Mirror was named after the Daily Mirror, a UK newspaper with a largely working-class distribution. The Mirror was from the start promoted as an affordable boat, and as a design it has done a great deal to make dinghy sailing accessible to a wide

  5. Segmented mirror - Wikipedia

    en.wikipedia.org/wiki/Segmented_mirror

    [3] [4] Using a monolithic mirror much larger than 5 meters is prohibitively expensive due to the cost of both the mirror, and the massive structure needed to support it. A mirror beyond that size would also sag slightly under its own weight as the telescope was rotated to different positions, [5] [6] changing the precision shape of the surface ...

  6. Quotient ring - Wikipedia

    en.wikipedia.org/wiki/Quotient_ring

    In ring theory, a branch of abstract algebra, a quotient ring, also known as factor ring, difference ring [1] or residue class ring, is a construction quite similar to the quotient group in group theory and to the quotient space in linear algebra. [2] [3] It is a specific example of a quotient, as viewed from the general setting of universal ...

  7. Infinity mirror - Wikipedia

    en.wikipedia.org/wiki/Infinity_mirror

    A self-contained infinity mirror used as a wall decoration. In a classic self-contained infinity mirror, a set of light bulbs, LEDs, or other point-source lights are placed around the periphery of a fully reflective mirror, and a second, partially reflective "one-way mirror" is placed a short distance in front of it, in a parallel alignment.

  8. MMT Observatory - Wikipedia

    en.wikipedia.org/wiki/MMT_Observatory

    The original building and part of the structure were reused. The new mirror was the first of its size to be cast and polished in the Steward Observatory Mirror Laboratory. The updated MMT, its name no longer an acronym, [2] was rededicated on 20 May 2000. [3] In late 2002, a novel deformable secondary mirror was added to the telescope. [4]

  9. Pilaster - Wikipedia

    en.wikipedia.org/wiki/Pilaster

    A pilaster is foremost a load-bearing architectural element used widely throughout the world and its history where a structural load is carried by a thickened section of wall or column integrated into a wall. It is also a purely ornamental element used in Classical architecture. As such it may be defined as a flattened column which has lost its ...