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Usage. On metal, patina is a coating of various chemical compounds such as oxides, carbonates, sulfides, or sulfates formed on the surface during exposure to atmospheric elements (oxygen, rain, acid rain, carbon dioxide, sulfur -bearing compounds). [2] In common parlance, weathering rust on steel is often mistakenly [3] referred to as patina.
Verdigris (/ ˈvɜːrdɪɡriː (s)/) [1] is a common name for any of a variety of somewhat poisonous [2][3][4][5] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition. [6]: 132 Once used as a medicine [7][8] and pharmaceutical preparation, [9]: 176 [10] verdigris occurs ...
Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...
Its name comes from the natural pigments that form a patina on copper, bronze, and brass as it ages. [2] The most famous example is the green patina that formed on the Statue of Liberty in New York Harbor. In the Middle Ages, the patina was made by attaching copper strips to a wooden block with acetic acid, then burying the sealed block in dung ...
Source. [1] /Maerz and Paul [1] ISCC–NBS descriptor. Strong orange. B: Normalized to [0–255] (byte) Bronze statue of the Roman Emperor Augustus. Bronze is a metallic brown color which resembles the metal alloy bronze. A bronze medal. The first recorded use of bronze as a color name in English was in 1753.
The traditional colors of Japan trace their historical origins to the Twelve Level Cap and Rank System which was established in 603 by Prince Shōtoku and based on the five Chinese elements. In this system, rank and social hierarchy were displayed and determined by certain colors.
The metals and common colours of heraldry. One system of hatching is shown at right. Tinctures are the colours, metals, and furs used in heraldry.Nine tinctures are in common use: two metals, or (gold or yellow) and argent (silver or white); the colours gules (red), azure (blue), vert (green), sable (black), and purpure (purple); and the furs ermine, which represents the winter fur of a stoat ...
The Nebra sky disc, c. 1800–1600 BC. The Nebra sky disc (German: Himmelsscheibe von Nebra, pronounced [ˈhɪml̩sˌʃaɪbə fɔn ˈneːbra]) is a bronze disc of around 30 cm (12 in) diameter and a weight of 2.2 kg (4.9 lb), having a blue-green patina and inlaid with gold symbols.
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