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  2. Mount Lemmon Observatory - Wikipedia

    en.wikipedia.org/wiki/Mount_Lemmon_Observatory

    Its original metal primary mirror performed poorly and was replaced in 1977 with a glass mirror made of Cer-Vit. [6] It is one of the telescopes used by students at Astronomy Camp. [7] It discovered 2011 AG5, an asteroid which achieved 1 on the Torino Scale. [8]

  3. Mirror armour - Wikipedia

    en.wikipedia.org/wiki/Mirror_armour

    "Mirror armour" is a type of partial plate armour which was developed initially from round metal mirrors (a kind of rondel) worn over other armour (usually over mail) as reinforcement. Metal mirrors in this armour were considered as protection from not only cold steel and arrows, but also supernatural influence.

  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. Reflecting telescope - Wikipedia

    en.wikipedia.org/wiki/Reflecting_telescope

    From the time of Newton to the 1800s, the mirror itself was made of metal – usually speculum metal. This type included Newton's first designs and the largest telescope of the 19th century, the Leviathan of Parsonstown with a 6 feet (1.8 m) wide metal mirror. In the 19th century a new method using a block of glass coated with very thin layer ...

  6. Speculum metal - Wikipedia

    en.wikipedia.org/wiki/Speculum_metal

    In contrast to household mirrors, where the reflecting metal layer is coated on the back of a glass pane and covered with a protective varnish, precision optical equipment like telescopes needs first surface mirrors that can be ground and polished into complex shapes such as parabolic reflectors. For nearly 200 years speculum metal was the only ...

  7. Mirror - Wikipedia

    en.wikipedia.org/wiki/Mirror

    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 ...

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