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  2. Silvering - Wikipedia

    en.wikipedia.org/wiki/Silvering

    Silvering. Silvering on the inside of a glass test tube. Silvering is the chemical process of coating a non-conductive substrate such as glass with a reflective substance, to produce a mirror. While the metal is often silver, the term is used for the application of any reflective metal.

  3. Fused quartz - Wikipedia

    en.wikipedia.org/wiki/Fused_quartz

    Fused quartz, fused silica or quartz glass is a glass consisting of almost pure silica (silicon dioxide, SiO 2) in amorphous (non- crystalline) form. This differs from all other commercial glasses, such as soda-lime glass, lead glass, or borosilicate glass, in which other ingredients are added which change the glasses' optical and physical ...

  4. 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 ...

  5. Foucault knife-edge test - Wikipedia

    en.wikipedia.org/wiki/Foucault_knife-edge_test

    Foucault test setup to measure a mirror. The Foucault knife-edge test is an optical test to accurately measure the shape of concave curved mirrors. It is commonly used by amateur telescope makers for figuring primary mirrors in reflecting telescopes. It uses a relatively simple, inexpensive apparatus compared to other testing techniques.

  6. Optical flat - Wikipedia

    en.wikipedia.org/wiki/Optical_flat

    A λ/20 optical flat that has been coated with aluminum, making a first-surface mirror Two optical flats tested using 589 nm laser-light. At 2 inches (5.1 cm) in diameter and 0.5 inches (13 mm) thick, both surfaces are flat to within 1/10 of the wavelength of the light (58.9 nm), as indicated by the perfectly straight fringes.

  7. First surface mirrors - Wikipedia

    en.wikipedia.org/?title=First_surface_mirrors&...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=First_surface_mirrors&oldid=1100457325"

  8. Bronze mirror - Wikipedia

    en.wikipedia.org/wiki/Bronze_mirror

    They are first-surface mirrors, where the immediate bronze surface is flat, plain and highly polished to be reflective, rather than second-surface mirrors, like modern glass mirrors, where the reflection comes from a backing applied to the glass. Maid holding folding mirror for her mistress, Greece, c. 100 BCE

  9. Aranmula Kannadi - Wikipedia

    en.wikipedia.org/wiki/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.

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