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The roots of the company can be traced to the founding of three companies: the Aluminum Manufacturing Company founded by Joseph Koenig in Two Rivers, Wisconsin, in 1895; the Manitowoc Aluminum Novelty Company, founded in neighboring Manitowoc, Wisconsin, by Henry Vits in 1898; and the New Jersey Aluminum Company founded in 1890 in Newark, New Jersey.
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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]
Large speculum metal mirrors are hard to manufacture, and the alloy is prone to tarnish, requiring frequent re-polishing. However, it was the only practical choice for large mirrors in high-precision optical equipment between the mid-17th and mid-19th centuries, before the invention of glass silvering.
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"Rust Mirror" is the eighth piece in a series of works that Rozin has created since 1999 called ‘mechanical mirrors’. In this series Rozin creates large-scale displays that recreate the viewer’s reflection by means of the manipulation of a multitude of tiles in a variety of materials, in effect turning these into physical pixels.
A pendant made from modern dichroic glass. Dichroic glass is glass which can display multiple different colors depending on lighting conditions.. One dichroic material is a modern composite non-translucent glass that is produced by stacking layers of metal oxides which give the glass shifting colors depending on the angle of view, causing an array of colors to be displayed as an example of ...
Viewing the mirror from behind the knife edge shows a pattern on the mirror surface. If the mirror surface is part of a perfect sphere, the mirror appears evenly lighted across the entire surface. If the mirror is spherical but with defects such as bumps or depressions, the defects appear greatly magnified in height.