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Wothlytype
The Wothlytype was an Alternative process, alternative photographic printing process, the eponymous 1864 invention of the German Jacob Wothly, in which a mixture of uranium ammonio-nitrate (uranyl nitrate) and silver nitrate in collodion formed a light-sensitive layer. It was a short-lived positive printing process proposed to remedy the recognised impermanence of Albumen print, albumen paper, and compared to which, it was considerably more light-sensitive. Wothlytype printing-out-paper was superseded by collodio-chloride papers before the end of the 1860s. Characteristics ] The Wothlytype enabled positive prints to be made directly on paper. The photographic emulsion consisted of a special uranium collodion that replaced the iodide, the chlorine or silver bromide. After exposure, the image was directly visible and was fixed immediately. Toning could be achieved in varying tones from deep blue-black to Purple (color), purple black. Sensitivity, efficiency and economy (reducing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wothlytype
The Wothlytype was an Alternative process, alternative photographic printing process, the eponymous 1864 invention of the German Jacob Wothly, in which a mixture of uranium ammonio-nitrate (uranyl nitrate) and silver nitrate in collodion formed a light-sensitive layer. It was a short-lived positive printing process proposed to remedy the recognised impermanence of Albumen print, albumen paper, and compared to which, it was considerably more light-sensitive. Wothlytype printing-out-paper was superseded by collodio-chloride papers before the end of the 1860s. Characteristics ] The Wothlytype enabled positive prints to be made directly on paper. The photographic emulsion consisted of a special uranium collodion that replaced the iodide, the chlorine or silver bromide. After exposure, the image was directly visible and was fixed immediately. Toning could be achieved in varying tones from deep blue-black to Purple (color), purple black. Sensitivity, efficiency and economy (reducing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranyl Nitrate
Uranyl nitrate is a water-soluble yellow uranium salt with the formula . The hexa-, tri-, and dihydrates are known. The compound is mainly of interest because it is an intermediate in the preparation of nuclear fuels. Uranyl nitrate can be prepared by reaction of uranium salts with nitric acid. It is soluble in water, ethanol, and acetone. As determined by neutron diffraction, the uranyl center is characteristically linear with short U=O distances. In the equatorial plane of the complex are six U-O bonds to bidentate nitrate and two water ligands. At 245 pm, these U-O bonds are much longer than the U=O bonds of the uranyl center. Uses Processing of nuclear fuels Uranyl nitrate is important for nuclear reprocessing. It is the compound of uranium that results from dissolving the decladded spent nuclear fuel rods or yellowcake in nitric acid, for further separation and preparation of uranium hexafluoride for isotope separation for preparing of enriched uranium. A special feature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacob Wothly
Jacob (; ; ar, يَعْقُوب, Yaʿqūb; gr, Ἰακώβ, Iakṓb), later given the name Israel, is regarded as a patriarch of the Israelites and is an important figure in Abrahamic religions, such as Judaism, Christianity, and Islam. Jacob first appears in the Book of Genesis, where he is described as the son of Isaac and Rebecca, and the grandson of Abraham, Sarah, and Bethuel. According to the biblical account, he was the second-born of Isaac's children, the elder being Jacob's fraternal twin brother, Esau. Jacob is said to have bought Esau's birthright and, with his mother's help, deceived his aging father to bless him instead of Esau. Later in the narrative, following a severe drought in his homeland of Canaan, Jacob and his descendants, with the help of his son Joseph (who had become a confidant of the pharaoh), moved to Egypt where Jacob died at the age of 147. He is supposed to have been buried in the Cave of Machpelah. Jacob had twelve sons through four women, his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
