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2. Cer-Vit - Wikipedia

   en.wikipedia.org/wiki/Cer-Vit

   Cer-vit is a family of glass-ceramic materials that were invented by Owens Illinois in the mid-1960s. Its principle ingredients are the oxides of lithium, aluminum and silicon. It is melted to form a glass which is then heat treated to nucleate and crystallize it into a material that is more than 90% microscopic crystals.

3. List of largest optical reflecting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   This table does not include all the largest mirrors manufactured. The Steward Observatory Mirror Lab produced the 6.5 metre f/1.25 collimator used in the Large Optical Test and Integration Site of Lockheed Martin, used for vacuum optical testing of other telescopes. Segmented mirrors are also referred to as mosaic mirrors. Single mirrors are ...

4. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   Many of the advances in reflecting telescopes included the perfection of parabolic mirror fabrication in the 18th century, [9] silver coated glass mirrors in the 19th century (built by Léon Foucault in 1858), [10] long-lasting aluminum coatings in the 20th century, [11] segmented mirrors to allow larger diameters, and active optics to ...

5. MMT Observatory - Wikipedia

   en.wikipedia.org/wiki/MMT_Observatory

   This made it possible to replace the six mirrors with a single 6.5-meter mirror. 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]

6. Go Beyond The Basic Sandwich This Year—Here Are Our Most ...

   www.aol.com/beyond-basic-sandwich-most-popular...

   These glass food containers are over 40% off: 'I like them more than my Pyrex' Show comments. Advertisement. Search Recipes. Picante Beef Steaks with Sautéed Onions. Picante-Glazed Chicken Wings.

7. 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 ...