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Edith Weyde
Edith Weyde (17 September 1901 – 10 February 1989) was a German chemist. She developed the silver salt Diffusion transfer—"Copyrapid"—which paved the way for the first photocopiers and instant photography. She also laid the foundation for color photography. Early life and education Weyde was the second child of an Austrian grammar school teacher in Prague. She grew up in Aussig and finished her Abitur in 1919. Then, she worked for four years as a laboratory assistant for the Verein für chemische und metallurgische Produktion. In 1923, she began studying chemistry at the Technical University of Dresden. Four years later, she finished her doctorate with Robert Luther at the Photographic Institute of the Technical University of Dresden. Professional life Weyde started her first job in the photographic-photochemical laboratory of I.G. Farbenindustrie AG in Oppau in 1928. After four years, she was transferred to the Agfa photo-paper factory in Leverkusen. She worked on i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edith Weyde
Edith Weyde (17 September 1901 – 10 February 1989) was a German chemist. She developed the silver salt Diffusion transfer—"Copyrapid"—which paved the way for the first photocopiers and instant photography. She also laid the foundation for color photography. Early life and education Weyde was the second child of an Austrian grammar school teacher in Prague. She grew up in Aussig and finished her Abitur in 1919. Then, she worked for four years as a laboratory assistant for the Verein für chemische und metallurgische Produktion. In 1923, she began studying chemistry at the Technical University of Dresden. Four years later, she finished her doctorate with Robert Luther at the Photographic Institute of the Technical University of Dresden. Professional life Weyde started her first job in the photographic-photochemical laboratory of I.G. Farbenindustrie AG in Oppau in 1928. After four years, she was transferred to the Agfa photo-paper factory in Leverkusen. She worked on i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diffusion Transfer
The Kodak verifax is a photo copying approach that uses a wet colloidal diffusion transfer technique patented by Yutzy, H.C. and Yackel, E.C. (1947) The light source is projected to the top crossing the negative being reflected -more or less, according to the color- against the original to be copied exposing the negative. Has a base that contains the recipient with the liquid developer and the exposure timer. Due to its extreme simplicity, the method was commonplace until the late 1960s, when it was surpassed by the popularity of the xerocopies using plain paper. Copies had some chemical smell and lost contrast over time. Diffusion transfer The DT (Diffusion transfer) was widespread in several countries since 1960: * CopyRapid Agfa; * Gevacopy of Gevaert (1950); * Verifax Kodak (1952-1976); * Copyproof (1980?); Other products not specifically intended for copying, but employing a similar PMT technology include: Kodak Ektaflex (1981); Polaroid, sepia (1948), id, White Black (1950 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical University Of Dresden
TU Dresden (for german: Technische Universität Dresden, abbreviated as TUD and often wrongly translated as "Dresden University of Technology") is a public research university, the largest institute of higher education in the city of Dresden, the largest university in Saxony and one of the 10 largest universities in Germany with 32,389 students . The name Technische Universität Dresden has only been used since 1961; the history of the university, however, goes back nearly 200 years to 1828. This makes it one of the oldest colleges of technology in Germany, and one of the country’s oldest universities, which in German today refers to institutes of higher education that cover the entire curriculum. The university is a member of TU9, a consortium of the nine leading German Institutes of Technology. The university is one of eleven German universities which succeeded in the German Universities Excellence Initiative, Excellence Initiative in 2012, thus getting the title of a "Univer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leverkusen
Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. With about 161,000 inhabitants, Leverkusen is one of the state's smaller cities. The city is known for the pharmaceutical company Bayer and its sports club Bayer 04 Leverkusen. History The heart of what is now Leverkusen was Wiesdorf, a village on the Rhine, which dates back to the 12th century. With the surrounding villages which have now been incorporated, the area also includes the rivers Wupper and Dhünn, and has suffered a lot from flooding, notably in 1571 and 1657, the latter resulting in Wiesdorf being moved East from the river to its present location. During the Cologne War, from 1583 to 1588 Leverkusen was ravaged by war. The entire area was rural until the late 19th century, when industry prompted the development that led to the city of Leverkusen, and to its becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agfacolor
An Agfacolor slide dated 1937 from café in Oslo, Norway. An Agfacolor slide dated 1937 from Paris, France. An Agfacolor slide dated 1938 from Hungary. An Agfacolor slide dated 1938 from Zakopane in Poland. An Agfacolor slide dated 1938 from Sweden. Budapest in Hungary, 1939. An Agfacolor slide dating from the early 1940s. While the colors themselves have held up well, damage visible includes dust and Newton's rings. Swedish battleship HM Pansarskepp Gustaf V (An Agfacolor slide dated until 1957). Agfacolor was the name of a series of color film products made by Agfa of Germany. The first Agfacolor, introduced in 1932, was a film-based version of their Agfa-Farbenplatte (Agfa color plate), a "screen plate" product similar to the French Autochrome. In late 1936, Agfa introduced Agfacolor Neu (New Agfacolor), a pioneering color film of the general type still in use today. The new Agfacolor was originally a reversal film used for making "slides", home movies and short do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instant Film
Instant film is a type of photographic film that was introduced by Polaroid Corporation to produce a visible image within minutes or seconds of the photograph's exposure. The film contains the chemicals needed for developing and fixing the photograph, and the camera exposes and initiates the developing process after a photo has been taken. In earlier Polaroid instant cameras the film is pulled through rollers, breaking open a pod containing a reagent that is spread between the exposed negative and receiving positive sheet. This film sandwich develops for some time after which the positive sheet is peeled away from the negative to reveal the developed photo. In 1972, Polaroid introduced ''integral film'', which incorporated timing and receiving layers to automatically develop and fix the photo without any intervention from the photographer. Instant film has been available in sizes from (similar to 135 film) up to size, with the most popular film sizes for consumer snapshots be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instant Camera
An instant camera is a camera which uses instant film, self-developing film to create a chemically Photographic processing, developed print shortly after taking the picture. Polaroid Corporation pioneered (and Patent, patented) consumer-friendly instant cameras and film, and were followed by various other manufacturers. The base of the technology is from a Hungarian chemist, Rott Andor. His invention, direct positive photography, also known as DTR (Diffusion Transfer Reversal) was patented in 1939. With the DTR process, the photographed surface or object immediately appears as a positive, which is an image corresponding to the dark and light shades of the original. When developing the image, the fixer and the developing material are present at the same time, and they immediately interact. The invention of commercially viable instant cameras which were easy to use is generally credited to United States, American scientist Edwin Land, who unveiled the first commercial instant ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society For Imaging Science And Technology
The Society for Imaging Science and Technology (IS&T) is a professional society (a type of research and education organization) in the field of photography. Founded in 1947 as the Society of Photographic Scientists and Engineers (SPSE), it is headquartered in Springfield, Virginia. In 2018 it had about 850 members worldwide, and 5,000 participants in its various technical and industry-related programs. IS&T is perhaps best known for its technical conferences and courses on various aspects of imaging science and technology, including digital imaging, digital printing, color imaging, photofinishing, archiving, and digital fabrication. The society publishes ''The Journal of Imaging Science and Technology'' and, in collaboration with SPIE, '' The Journal of Electronic Imaging''. In 2018, IS&T introduced the open access ''Journal of Perceptual Imaging''. See also *Medical imaging *International Commission for Optics *Optical Society of America *SPIE SPIE (formerly the Society of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Photographic Society
The Royal Photographic Society of Great Britain, commonly known as the Royal Photographic Society (RPS), is one of the world's oldest photographic societies. It was founded in London, England, in 1853 as the Photographic Society of London with the objective of promoting the art and science of photography, and in 1853 received Monarchy of the United Kingdom, royal patronage from Queen Victoria and Albert, Prince Consort, Prince Albert. A change to the society's name to reflect the patronage was, however, not considered expedient at the time. In 1874, it was renamed the Photographic Society of Great Britain, and only from 1894 did it become known as the Royal Photographic Society of Great Britain, a title which it continues to use today. On 25 June 2019, the Duchess of Cambridge, now Catherine, Princess of Wales, became the Society's Patron, taking over from Queen Elizabeth II who had been patron since 1952. A registered Charitable organization, charity since 1962, in July 2004, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
