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  2. Primary mirror - Wikipedia

    en.wikipedia.org/wiki/Primary_mirror

    The largest optical telescope in the world as of 2009 to use a non-segmented single-mirror as its primary mirror is the 8.2 m (27 ft) Subaru telescope of the National Astronomical Observatory of Japan, located in Mauna Kea Observatory on Hawaii since 1997; [3] [better source needed] however, this is not the largest diameter single mirror in a telescope, the U.S./German/Italian Large Binocular ...

  3. Solar mirror - Wikipedia

    en.wikipedia.org/wiki/Solar_mirror

    Metal substrates ("Metal Mirror Reflectors") may also be used in solar reflectors. NASA Glenn Research Center, for example, used a mirror comprising a reflective aluminum surface on a metallic honeycomb [1] as a prototype reflector unit for a proposed power system for the International Space Station. One technology uses aluminum composite ...

  4. Zerodur - Wikipedia

    en.wikipedia.org/wiki/Zerodur

    The Keck II Telescope showing the segmented primary mirror made of Zerodur. The main applications for Zerodur include telescope optics in astronomy [2] and space applications, [3] lithography machines for microchips and displays, [4] and inertial measurements systems for navigation.

  5. 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 ...

  6. Aranmula Kannadi - Wikipedia

    en.wikipedia.org/wiki/Aranmula_Kannadi

    New Aranmula Kannadi Aranmula kannadi Aranmula kannadi in its raw, unpolished form Aranmula kannadi in various etched brass frames on display. Aranmula Kannadi, meaning the Aranmula mirror, is a handmade, metal-alloy, first surface mirror made in Aranmula, a small town in Pathanamthitta in the state of Kerala, India.

  7. 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 ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Heliostat - Wikipedia

    en.wikipedia.org/wiki/Heliostat

    The target may be a physical object, distant from the heliostat, or a direction in space. To do this, the reflective surface of the mirror is kept perpendicular to the bisector of the angle between the directions of the Sun and the target as seen from the mirror. In almost every case, the target is stationary relative to the heliostat, so the ...

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