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A waterworn cobble of porphyry. Rhyolite porphyry from Colorado; scale bar in lower left is 1 cm (0.39 in) Porphyry ( / ˈpɔːrfəri / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate -rich, generally aphanitic matrix or groundmass. In its non ...
Theodora Porphyrogenita [a] ( Greek: Θεοδώρα Πορφυρογέννητη, romanized : Theodṓra Porphyrogénnētē; c. 980 – 31 August 1056) was Byzantine Empress from 21 April 1042 to her death on 31 August 1056, and sole ruler from 11 January 1055. She was the last sovereign of the Macedonian dynasty, that ruled the Byzantine ...
In 1996, James Allan Stewart Evans suggested that the name was a reference to the color of the whale's skin. Porphyra meant a deep purple color in Greek and Porphyrios might have had dark-wine colored skin. This was further supported by John K. Papadopoulos and Deborah Ruscillo in 2002, who believed the name simply meant "purple".
Violet is the color of light at the short wavelength end of the visible spectrum. It is one of the seven colors that Isaac Newton labeled when dividing the spectrum of visible light in 1672. Violet light has a wavelength between approximately 380 and 435 nanometers. [2] The color's name is derived from the Viola genus of flowers.
Red-violet refers to a rich color of high medium saturation about 3/4 of the way between red and magenta, closer to magenta than to red. [1] In American English, this color term is sometimes used in color theory as one of the purple colors—a non- spectral color between red and violet that is a deep version of a color on the line of purples on ...
The Nika riots (Greek: Στάσις τοῦ Νίκα, romanized: Stásis toû Níka), Nika revolt or Nika sedition took place against Byzantine emperor Justinian I in Constantinople over the course of a week in 532 AD They are often regarded as the most violent riots in the city's history, with nearly half of Constantinople being burned or destroyed and tens of thousands of people killed.
Byzantine coinage. Byzantine currency, money used in the Eastern Roman Empire after the fall of the West, consisted of mainly two types of coins: gold solidi and hyperpyra and a variety of clearly valued bronze coins. By the 15th century, the currency was issued only in debased silver stavrata and minor copper coins with no gold issue.
CIELCh uv ( L, C, h) (66, 102, 295°) Source. Maerz and Paul [1] ISCC–NBS descriptor. Vivid purple. B: Normalized to [0–255] (byte) Heliotrope is a pink - purple tint that is a representation of the colour of the heliotrope flower . The first recorded use of heliotrope as a color name in English was in 1882.