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Universalium. 2010.
violet layer — n. Astron. a layer of particles in the upper atmosphere of the planet Mars, that scatters and absorbs certain electromagnetic radiation, thus preventing the blue, violet, and ultraviolet light waves from passing through … English World dictionary
Violet Club — was a nuclear weapon deployed by the United Kingdom during the cold war.Violet Club was the first high yield weapon deployed by the British, and was intended to provide an emergency capability until a thermonuclear weapon could be developed from… … Wikipedia
Crystal violet — IUPAC name Tris(4 (dimethylamino)phenyl)methylium chloride[ … Wikipedia
Croconate violet — or 1,3 bis(dicyanomethylene)croconate is a divalent anion with chemical formula C11N4O2− 3 or ((N≡C )2C=)2(C5O3)2−. It is one of the pseudo oxocarbon anions, as it can be described as a derivative of the croconate … Wikipedia
Mission to Mars (novel) — Mission to Mars is a 1955 science fiction novel by Patrick Moore, published by Burke. The action is set initially on Earth and then on Mars. Plot synopsis Maurice Gray, a young recently orphaned Englishman, arrives at the Woomera Rocket base in… … Wikipedia
photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… … Universalium
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
Color photography — Color film redirects here. For the motion picture equivalent, see Color motion picture film. A circa 1850 Hillotype photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill s process did… … Wikipedia
Blu-ray Disc — Blue ray redirects here. For the fish of the same name, see Neoraja caerulea. Blu ray Disc Media type … Wikipedia
Ultraviolet — UV redirects here. For other uses, see UV (disambiguation). UVB redirects here. For the mysterious shortwave radio station in Russia, see UVB 76. For other uses, see Ultraviolet (disambiguation). False color image of the Sun s corona as seen in… … Wikipedia
