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Han purple was the first synthetic purple pigment, invented in China in about 700 BC. It was used in wall paintings and pottery and other applications. In color, it was very close to indigo, which had a similar chemical structure. Han purple was very unstable, and sometimes was the result of the chemical breakdown of Han blue.
Lean or purple drank (known by numerous local and street names) is a polysubstance drink used as a recreational drug. It is prepared by mixing prescription-grade cough or cold syrup containing an opioid drug and an anti-histamine drug with a soft drink and sometimes hard candy.
The Roman mythographer Julius Pollux, writing in the 2nd century AD, asserted (Onomasticon I, 45–49) that the purple dye was first discovered by the philosopher Heracles of Tyre, or rather, by his dog, whose mouth was stained purple from chewing on snails along the coast at Tyre.
The colour purple, which had been a mark of aristocracy and prestige since ancient times, was especially expensive and difficult to produce. Its extraction was variable and complicated, and so Perkin and his brother realised that they had discovered a possible substitute whose production could be commercially successful.
The most famous violet-purple dye in the ancient world was Tyrian purple, made from a type of sea snail called the murex, found around the Mediterranean. In western Polynesia, residents of the islands made a violet dye similar to Tyrian purple from the sea urchin.
The psychedelic drug (or entheogen) lysergic acid diethylamide ( LSD) was first synthesized on November 16, 1938, by the Swiss chemist Albert Hofmann in the Sandoz laboratories in Basel, Switzerland. [1] It was not until five years later on April 19, 1943, that the psychedelic properties were found. [2]
One of the earliest purposes of color theory was to establish rules governing the mixing of pigments. Traditional color theory was built around "pure" or ideal colors, characterized by different sensory experiences rather than attributes of the physical world.
Ignaz Semmelweis was born on 1 July 1818 in the Tabán neighbourhood of Buda, Kingdom of Hungary, [5] [A] Austrian Empire. He was the fifth child out of 10 of the prosperous grocer family of József Semmelweis and Teréz Müller. Of German ancestry, his father was an ethnic German born in Kismarton, in the Kingdom of Hungary (now Eisenstadt ...
The pansy flower has varieties that exhibit three different colors: pansy (a color between indigo and violet), pansy pink, and pansy purple. The first recorded use of pansy purple as a color name in English was in 1814.
The typical artists' paint or pigment color wheel includes the blue, red, and yellow primary colors. The corresponding secondary colors are green, orange, and violet or purple. The tertiary colors are green-yellow, yellow-orange, orange-red, red-violet/purple, purple/violet-blue and blue-green.