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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. Claude glass - Wikipedia

   en.wikipedia.org/wiki/Claude_glass

   Claude Lorrain mirror in shark skin case. A Claude glass (or black mirror) is a small mirror, slightly convex in shape, with its surface tinted a dark colour. Bound up like a pocket-book or in a carrying case, Claude glasses were used by artists, travelers and connoisseurs of landscape and landscape painting.

4. 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. The perception of ...

5. Silvering - Wikipedia

   en.wikipedia.org/wiki/Silvering

   When glass mirrors first gained widespread usage in Europe during the 16th century, most were silvered with an amalgam of tin and mercury, [6] In 1835 German chemist Justus von Liebig developed a process for depositing silver on the rear surface of a piece of glass; this technique gained wide acceptance after Liebig improved it in 1856.

6. Just How Worried About Social Security Should You Be Right Now?

   www.aol.com/just-worried-social-security-now...

   Furthermore, 43% of retirees believe their benefits will be cut in the future, while 47% of nonretired adults worry that Social Security won't be able to pay them a benefit at all once they retire.

7. White House aides discuss preemptive pardons for Trump ... - AOL

   www.aol.com/news/white-house-aides-discuss...

   President Joe Biden's top aides are discussing whether preemptive pardons to current and former public officials who may be targeted by the incoming Trump administration should be considered, but ...