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Deep reddish purple. B: Normalized to [0–255] (byte) The color Byzantium is a particular dark tone of purple. It originates in modern times, and, despite its name, it should not be confused with Tyrian purple ( hue rendering ), the color historically used by Roman and Byzantine emperors. The latter, often also referred to as "Tyrian red", is ...
Tyrian purple is a pigment made from the mucus of several species of Murex snail. Production of Tyrian purple for use as a fabric dye began as early as 1200 BC by the Phoenicians, and was continued by the Greeks and Romans until 1453 AD, with the fall of Constantinople.
The Byzantine emperor Constantine VII Porphyrogenitus in a 945 carved ivory. Traditionally, born in the purple [1] (sometimes "born to the purple") was a category of members of royal families born during the reign of their parent. This notion was later loosely expanded to include all children born of prominent or high-ranking parents. [2]
The colored circles on food packages can come in a variety of colors in varying shades. Those colored shapes are called “printer’s color blocks” or “process control patches,” and they ...
Shades of purple. There are numerous variations of the color purple, a sampling of which is shown below. In common English usage, purple is a range of hues of color occurring between red and blue. [1] However, the meaning of the term purple is not well defined. There is confusion about the meaning of the terms purple and violet even among ...
Purple in the Byzantine Empire and Carolingian Europe. Through the early Christian era, the rulers of the Byzantine Empire continued the use of purple as the imperial color, for diplomatic gifts, and even for imperial documents and the pages of the Bible. Gospel manuscripts were written in gold lettering on parchment that was colored Tyrian purple.
Greek fire was an incendiary chemical weapon manufactured in and used by the Eastern Roman Empire from the seventh through the fourteenth centuries. The recipe for Greek fire was a closely-guarded state secret, but historians speculate it may have been made by combining pine resin, naphtha, quicklime, calcium phosphide, sulfur, or niter.
Sodium hexametaphosphate ( SHMP) is a salt of composition Na6[ (PO3)6]. [3] Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO 3 ), of which the hexamer is one, and is usually the compound referred to by this name. Such a mixture is more correctly termed sodium polymetaphosphate.