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Colour names often developed individually in natural languages, typically beginning with black and white (or dark and light), and then adding red, and only much later – usually as the last main category of colour accepted in a language – adding the colour blue, probably when blue pigments could be manufactured reliably in the culture using ...
Prussian blue is a dark blue pigment containing iron and cyanide produced by the oxidation of ferrous ferrocyanide salts. It was invented in Berlin between 1704 and 1710. It had an immediate impact on the pigment market, because its intense deep blue color approached the quality of ultramarine at a much lower price.
The pigment is noteworthy for its vibrant, near-perfect blue color and unusually high NIR reflectance. [1] [2] The color may be adjusted by varying the In/Mn ratio in the pigment's base formula of YIn 1−x Mn x O 3, but the bluest pigment, YIn 0.8 Mn 0.2 O 3, has a color comparable to standard cobalt blue CoAl 2 O 4 pigments. [2]
As the color that most symbolized harmony, blue was chosen as the color of the flags of the United Nations and the European Union.{2} [2] [3] [page needed] On 9 December 1955, the Committee of Ministers adopted the Emblem of the Council of Europe selecting the color heraldic azure to represent the blue sky of the Western world. [4]
In November 2022, Nakamura co-founded Blue Laser Fusion, a commercial fusion company, with Hiroaki Ohta, a former president of Tokyo-based drone maker ACSL. [26] In July 2023, Blue Laser Fusion raised $25 million from venture capital firm JAFCO Group and the Mirai Creation Fund, which is backed by Toyota Motor and other investors and managed by ...
Sir William Henry Perkin FRS (12 March 1838 – 14 July 1907) [1] was a British chemist and entrepreneur best known for his serendipitous discovery of the first commercial synthetic organic dye, mauveine, made from aniline.
The name is now used for firefighters today. In the book Lawtalk, James Clapp and Elizabeth Thornburg say the term spread to other professions, e.g., a "thin white line of bishops". [3] [4] An early known use of the phrase "thin blue line" is from a 1911 poem by Nels Dickmann Anderson, titled "The Thin Blue Line".
The Munsell color wheel prompted Binney & Smith to adopt a similar color wheel concept for Crayola crayons in 1930, using six principal hues (red, orange, yellow, green, blue, and violet) and six intermediate hues (red-orange, yellow-orange, yellow-green, blue-green, blue-violet, and red-violet), for a twelve-color wheel.