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William Henry Perkin. 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. Though he failed in trying to synthesise quinine for the treatment of malaria, he became successful ...
Mauveine, also known as aniline purple and Perkin's mauve, was the first synthetic organic chemical dye, [69] [70] discovered serendipitously in 1856. Its chemical name is 3-amino-2,±9-dimethyl-5-phenyl-7-(p-tolylamino)phenazinium acetate.
Tyrian purple (Ancient Greek: πορφύρα porphúra; Latin: purpura), also known as royal purple, imperial purple, or imperial dye, is a reddish-purple natural dye. The name Tyrian refers to Tyre, Lebanon , once Phoenicia .
Mauveine, also known as aniline purple and Perkin's mauve, was the first synthetic organic chemical dye, [24] [25] discovered serendipitously during an attempt to make quinine in 1856. Its chemical name is 3-amino-2,±9-dimethyl-5-phenyl-7-(p-tolylamino) phenazinium acetate.
Henrietta Swan Leavitt (/ ˈlɛvɪt /; July 4, 1868 – December 12, 1921 [2]) was an American astronomer. [1] Her discovery of how to effectively measure vast distances to remote galaxies led to a shift in the scale and understanding of the scale and the nature of the universe. [3] Nomination of Leavitt for the Nobel Prize had to be halted ...
Mauveine, also known as aniline purple and Perkin's mauve, was one of the first synthetic dyes. [1][2] It was discovered serendipitously by William Henry Perkin in 1856 while he was attempting to synthesise the phytochemical quinine for the treatment of malaria. [3] It is also among the first chemical dyes to have been mass-produced. [4][5]
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 visible spectrum is the band of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light (or simply light). The optical spectrum is sometimes considered to be the same as the visible spectrum, but some authors define the term more broadly, to include the ...