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Prussian blue pigment is significant since it was the first stable and relatively lightfast blue pigment to be widely used since the loss of knowledge regarding the synthesis of Egyptian blue. European painters had previously used a number of pigments such as indigo dye , smalt , and Tyrian purple , and the extremely expensive ultramarine made ...
The Romans had many different words for varieties of blue, including caeruleus, caesius, glaucus, cyaneus, lividus, venetus, aerius, and ferreus, but two words, both of foreign origin, became the most enduring; blavus, from the Germanic word blau, which eventually became bleu or blue; and azureus, from the Arabic word lazaward, which became azure.
Prussian blue, a dark blue pigment containing iron and cyanide Prussian blue (medical use), the use of Prussian blue for medical treatment and diagnosis; Perls' Prussian blue, a stain used for medical diagnosis
Prussian blue was developed around 1706. [6] It is on the World Health Organization's List of Essential Medicines. [7] As of 2016, it is only approved for medical use in Germany, the United States, and Japan. [8] [9] [10] Access to medical-grade Prussian blue can be difficult in many areas of the world including the developed world. [11]
Diversity in color symbolism occurs because color meanings and symbolism occur on an individual, cultural and universal basis. Color symbolism is also context-dependent and influenced by changes over time. [3] Symbolic representations of religious concepts or articles may include a specific color with which the concept or object is associated. [4]
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The alchemical symbol for the sun and various sun gods. Also the alchemical symbol for gold which is the metal represented by the Sun which is the astral counterpart. Cross of Saint Peter (Petrine Cross) Peter requested to be crucified upside down, as he felt unworthy to die in the same manner as Christ. Used as a symbol of Saint Peter. A very ...
SEE ALSO: Mother horrified after learning what heart symbol on daughter's stuffed toy really meant A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify ...