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Dry Plate
Dry plate, also known as gelatin process, is an improved type of photographic plate. It was invented by Dr. Richard L. Maddox in 1871 and had become so widely adopted by 1879 that the first dry plate factory had been established. With much of the complex chemistry work centralized into a factory, the new process simplified the work of photographers, allowing them to expand their business. Development Gelatin emulsions, as proposed by Maddox, were very sensitive to touch and mechanical friction and were not much more sensitive to light than collodion emulsions. Charles Harper Bennett discovered a method of hardening the emulsion, making it more resistant to friction in 1873. In 1878, Bennett discovered that by prolonged heating, the sensitivity of the emulsion could be greatly increased. George Eastman developed a machine to coat glass plates in 1879 and opened the Eastman Film and Dry Plate Company, reducing the cost of photography. A competitor of Eastman in the development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caja De Placas Secas Al Gelatino-bromuro De Plata, Marca Lumière, Hacia 1900, Fototeca Del IPCE, Madrid, España
Caja (meaning "box" in Spanish) can refer to: * ''Caja'' or ''caixa'', a Savings bank (Spain), Spanish savings bank similar to a credit union * Caja project, a former Google project for reducing security risks in HTML, CSS and JavaScript * Caja del Rio, a mesa in New Mexico, USA * Caja vallenata, a drum similar to a tambora * Caja China, see Nochebuena * Caja (software), Caja, the official file manager for the MATE (software), MATE desktop environment People * Isidoro Caja de la Jara (died 1593), Spanish Roman Catholic bishop of Mondoñedo * Attilio Caja (born 1961), Italian professional basketball coach * Caja Heimann (1918–1988), Danish film actress * Jerome Caja (1958–1995), American mixed-media painter and Queercore performance artist {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Plate
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. History 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 collodion process. The wet plate process was replaced late in the 19th century by gelatin dry plates. A view camera nicknamed "The Mammoth" weighing was built by George R. Lawrence in 1899, specifically to photograph "The Alton Limited" train owned by the Chicago & Alton Railway. It took photographs on glass plates measuring × . Glass plate photographic material largely faded from the consumer market in the early years of the 20th century, as more convenient and less fragile fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Leach Maddox
Richard Leach Maddox (4 August 1816 – 11 May 1902) was an English photographer and physician who invented lightweight gelatin negative dry plates for photography in 1871. Early life Richard Leach Maddox was born at Bath, England, on 4 August 1816. Photomicographic studies Long before his discovery of the dry gelatin photographic emulsion, Maddox was prominent in what was called photomicrography - photographing minute organisms under the microscope. The eminent photomicrographer of the day, Lionel S. Beale, included as a frontispiece images made by Maddox in his manual 'How to work with the Microscope' Maddox freely gave his discovery to the world, saying (to W. J. Harrison, in a letter of 1887) that " hadno thought of bringing the subject into notice until it had been lifted from the cradle". Maddox, at the initial stage of invention, could probably produce only 'lantern slides' contact-copied from his microscope plates, the slow speed being impracticable for camera len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographer
A photographer (the Greek language, Greek φῶς (''phos''), meaning "light", and γραφή (''graphê''), meaning "drawing, writing", together meaning "drawing with light") is a person who makes photographs. Duties and types of photographers As in other arts, the definitions of amateur and professional are not entirely categorical. An ''amateur photographer'' takes snapshots for pleasure to remember events, places or friends with no intention of selling the images to others. A ''professional photographer'' is likely to take photographs for a session and image purchase fee, by salary or through the display, resale or use of those photographs. A professional photographer may be an employee, for example of a newspaper, or may contract to cover a particular planned event such as a Wedding photography, wedding or graduation, or to illustrate an advertising, advertisement. Others, like Fine art photography, fine art photographers, are freelancers, first making an image and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gelatin
Gelatin or gelatine (from la, gelatus meaning "stiff" or "frozen") is a translucent, colorless, flavorless food ingredient, commonly derived from collagen taken from animal body parts. It is brittle when dry and rubbery when moist. It may also be referred to as hydrolyzed collagen, collagen hydrolysate, gelatine hydrolysate, hydrolyzed gelatine, and collagen peptides after it has undergone hydrolysis. It is commonly used as a gelling agent in food, beverages, medications, drug or vitamin capsules, photographic films, papers, and cosmetics. Substances containing gelatin or functioning in a similar way are called gelatinous substances. Gelatin is an irreversibly hydrolyzed form of collagen, wherein the hydrolysis reduces protein fibrils into smaller peptides; depending on the physical and chemical methods of denaturation, the molecular weight of the peptides falls within a broad range. Gelatin is present in gelatin desserts, most gummy candy and marshmallows, ice creams, dips ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collodion
Collodion is a flammable, syrupy solution of nitrocellulose in ether and alcohol. There are two basic types: flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible nitrocellulose film. While it is initially colorless, it discolors over time. Non-flexible collodion is often used in theatrical make-up. Collodion was also the basis of most wet-plate photography until it was superseded by modern gelatin emulsions. History In 1846 Louis-Nicolas Ménard and Florès Domonte discovered that cellulose nitrate could be dissolved in ether. They devised a mixture of ether (ethoxyethane) as the solvent and ethanol as a diluent that rendered cellulose nitrate into a clear gelatinous liquid. Collodion was first used medically as a dressing in 1847 by the Boston physician John Parker Maynard. The solution was dubbed "collodion" (from the Greek κολλώδης (''kollodis''), g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Harper Bennett
Charles Harper Bennett (born 1840 in London, died 1927 in Sydney) was an English photographic pioneer. He improved the gelatin silver process developed by Richard Leach Maddox Richard Leach Maddox (4 August 1816 – 11 May 1902) was an English photographer and physician who invented lightweight gelatin negative dry plates for photography in 1871. Early life Richard Leach Maddox was born at Bath, England, on 4 Augu ..., first in 1873 by a method of hardening the emulsion, making it more resistant to friction, and later in 1878 Bennett discovered that by prolonged heating the sensitivity of the emulsion could be greatly increased. This increased sensitivity resulting enabled shooting at 1/25 second, paving the way for the snapshot. References {{DEFAULTSORT:Bennett, Charles Harper 1840 births 1927 deaths English inventors 19th-century English photographers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Eastman
George Eastman (July 12, 1854March 14, 1932) was an American entrepreneur who founded the Kodak, Eastman Kodak Company and helped to bring the photographic use of roll film into the mainstream. He was a major philanthropist, establishing the Eastman School of Music, Rochester Philharmonic Orchestra, and schools of dentistry and medicine at the University of Rochester and in London Eastman Dental Hospital; contributing to the Rochester Institute of Technology (RIT) and the construction of several buildings at the second campus of Massachusetts Institute of Technology (MIT) on the Charles River. In addition, he made major donations to Tuskegee University and Hampton University, historically black universities in Southern United States, the South. With interests in improving health, he provided funds for clinics in London and other European cities to serve low-income residents. In his final two years, Eastman was in intense pain caused by a disorder affecting his spine. On March ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Levy (photographer) , or Bert Levy (1897–1965), soldier, military instructor and author
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Albert Levy may refer to: * Albert Levy (surgeon) (1800–1848), surgeon to revolutionary Texan forces in 1835 * Albert Lévy (photographer) (1844–1907), French photographer * Albert Levy (editor) (20th century), editor of the Judaeo-Spanish language magazine '' La Vara'' * Albert Levy Themans (1889–1959), Dutch bobsledder and businessman See also *Yank Levy Bert "Yank" Levy (October 5, 1897September 2, 1965) was a Canadian soldier, socialist, military instructor and author/pamphleteer of one of the first manuals on guerrilla warfare, which was widely circulated with more than a half million publish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard L
Richard is a male given name. It originates, via Old French, from Old Frankish and is a compound of the words descending from Proto-Germanic ''*rīk-'' 'ruler, leader, king' and ''*hardu-'' 'strong, brave, hardy', and it therefore means 'strong in rule'. Nicknames include "Richie", "Dick", "Dickon", " Dickie", "Rich", "Rick", "Rico", "Ricky", and more. Richard is a common English, German and French male name. It's also used in many more languages, particularly Germanic, such as Norwegian, Danish, Swedish, Icelandic, and Dutch, as well as other languages including Irish, Scottish, Welsh and Finnish. Richard is cognate with variants of the name in other European languages, such as the Swedish "Rickard", the Catalan "Ricard" and the Italian "Riccardo", among others (see comprehensive variant list below). People named Richard Multiple people with the same name * Richard Andersen (other) * Richard Anderson (other) * Richard Cartwright (other) * Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Journal Of Photography
The ''British Journal of Photography'' (BJP) is a magazine about photography, published by 1854 Media. It includes in-depth articles, profiles of photographers, analyses, and technological reviews. History The magazine was established in Liverpool as the ''Liverpool Photographic Journal'' in 1854 with its first issue appearing on 14 January 1854, making it the United Kingdom's second oldest photographic title after the Photographic Journal. It was printed monthly until 1857 when it became the ''Liverpool and Manchester Photographic Journal'', published bi-weekly, then the ''Photographic Journal'' from 1859 to 1860, when it obtained its present name. The magazine moved to London in 1864, first to Covent Garden; then in 2007 to Soho; and in 2013 to Shoreditch; then in 2017 to East India Dock. It was published weekly from 1864 to March 2010, then reverted to its original monthly period. It is now also available as an electronic magazine, online and in iPad and iPhone formats. In 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josef Maria Eder
Josef Maria Eder (16 March 1855 – 18 October 1944) was an Austrian chemist who specialized in the chemistry of photography, and who wrote a comprehensive early history of the technical development of chemical photography. Life and work Eder was born in Krems an der Donau in 1855. He studied chemistry, physics and mathematics at the Vienna University of Technology and at the University of Vienna. In 1876, he received his PhD and in 1879, after his habilitation, became lecturer at the Vienna University of Technology. His research then was focused on the chemistry of photography. After spending some time at the Staatliche Gewerbeschule Vienna, he became lecturer at the Höhere Gewerbeschule Vienna. This change improved his possibilities for doing research. In the following years, Eder developed sensitized gelatin silver process. Orthochromatic photographic plates, in combination with a color filter counter-acting the plates' inhomogeneous sensitivity to light of different wavelength ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
