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2. Silvering - Wikipedia

   en.wikipedia.org/wiki/Silvering

   In the early 10th century, the Persian scientist al-Razi described ways of silvering and gilding in a book on alchemy, [citation needed] but this was not done for the purpose of making mirrors. Tin-coated mirrors were first made in Europe in the 15th century. The thin tinfoil used to silver mirrors was known as "tain". [5]

3. Mirror - Wikipedia

   en.wikipedia.org/wiki/Mirror

   There are optical mirrors such as mangin mirrors that are second surface mirrors (reflective coating on the rear surface) as part of their optical designs, usually to correct optical aberrations. [65] Deformable thin-shell mirror. It is 1120 millimetres across but just 2 millimetres thick, making it much thinner than most glass windows. [66]

4. Optical coating - Wikipedia

   en.wikipedia.org/wiki/Optical_coating

   The metal used determines the reflection characteristics of the mirror; aluminium is the cheapest and most common coating, and yields a reflectivity of around 88%-92% over the visible spectrum. More expensive is silver , which has a reflectivity of 95%-99% even into the far infrared , but suffers from decreasing reflectivity (<90%) in the blue ...

5. One-way mirror - Wikipedia

   en.wikipedia.org/wiki/One-way_mirror

   One-way mirrors for upper-level observation deck viewing down into a classroom (University of Wisconsin-Eau Claire)A one-way mirror, also called two-way mirror [1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other.

6. Spin casting (mirrors) - Wikipedia

   en.wikipedia.org/wiki/Spin_casting_(mirrors)

   Pioneered by Roger Angel at the Steward Observatory's mirror lab, this makes large (8.4 metres or 28 feet) thin parabolic mirrors by spinning the oven as the glass is melted and cooled. The term is applied to the fabrication of large telescope mirrors, where the natural paraboloid curve followed by the molten glass greatly reduces the amount of ...

7. AOL Video - Serving the best video content from AOL and ...

   www.aol.com/video

   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.