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Chemistry, Class 11, Structure of Atom - Class Notes
WebApr 6, 2024 · Emission spectra. When the radiations emitted from some source eg: from the sun or by passing electric discharge through a gas at low pressure or by heating some substance to high temperature is … WebApr 30, 2024 · With dry plates, I can even fly commercially, without having to worry about the strict Airlines regulations against the poisonous and explosive wet collodion chemistry. … try my south east mix it\u0027s a poser
George Eastman, Kodak, and the Birth of Consumer Photography
WebEarly Photography. Practical photographic processes were devised in the 1830s by Louis-Jacques-Mandé Daguerre in France and by William Henry Fox Talbot in England. In Daguerre's method, a silver iodide-coated silver plate was exposed to light in a camera, whereby the exposed silver iodide was decomposed to metallic silver and iodine. WebSep 9, 2024 · And this was really the first commercial photographic process introduced in 1839. And the way this process worked is that they would coat a copper plate with silver. And then they would expose it to iodine, which would create the silver iodide, which is … Photographic plates preceded photographic film as a capture medium in photography, and were still used in some communities up until the late 20th century. The light-sensitive emulsion of silver salts was coated on a glass plate, typically thinner than common window glass. See more Glass plates were far superior to film for research-quality imaging because they were stable and less likely to bend or distort, especially in large-format frames for wide-field imaging. Early plates used the wet See more Astronomy Many famous astronomical surveys were taken using photographic plates, including the first See more The earliest flexible films of the late 1880s were sold for amateur use in medium-format cameras. The plastic was not of very high optical quality and tended to curl and otherwise not provide as desirably flat a support surface as a sheet of glass. Initially, a … See more • Camera • Film base • Photographic film See more The sensitivity of certain types of photographic plates to ionizing radiation (usually X-rays) is also useful in medical imaging and material science applications, although they have been largely replaced with reusable and computer readable image plate detectors … See more Several institutions have established archives to preserve photographic plates and prevent their valuable historical information from being lost. The emulsion on the plate can deteriorate. In addition, the glass plate medium is fragile and prone to cracking if … See more • Peter Kroll, Constanze La Dous, Hans-Jürgen Bräuer: "Treasure Hunting in Astronomical Plate Archives." (Proceedings of the international Workshop held at … See more try my south-east mix it\u0027s a poser