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Photozincography
Photozincography, sometimes referred to as heliozincography but essentially the same process, known commercially as zinco, is the photographic process developed by Sir Henry James FRS (1803–1877) in the mid-nineteenth century. This method enabled the accurate reproduction of images, manuscript text and outline engravings, which proved invaluable when originally used to create maps during the Ordnance Survey of Great Britain during the 1850s, carried out by the government's Topographical Department, headed by Colonel Sir Henry James. Basis The foundation of this method is the insolubility of bichromate of potash upon exposure to light, allowing the printing of images onto zinc from photographic negatives. Method At this time, high-contrast negatives were made using the wet plate collodion method (a solution of nitrocellulose in ether or acetone on glass). Once the negative had been made, a sheet of thin tracing paper was coated in a mixture of saturated potassium bichrom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photozincography Of Domesday Book
In the 1860s the first facsimile of Domesday Book was created by the process of photozincography (later termed ''zinco''), and was executed under the directorship of Henry James at the Southampton offices of the Ordnance Survey. Initial stages Having developed the photozincographic process, in a meeting arranged between James and William Ewart Gladstone, then Chancellor of the Exchequer, Sir Henry expressed his ability to produce photozincographic copies of ancient documents at "a very trifling cost". James outlined for his superiors the cost of a complete reproduction of Domesday Book (an estimate of £1575 for 500 copies or £3.3s per copy) using his process. In addition to this James further outlined the cost of a single county to demonstrate the affordability of the process, using Cornwall as an example of one of the shorter entries in the volumes (eleven folio pages) and estimated the cost of 500 copies to be £11. 2s. 4d. In doing so he selected the first extract of Dome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry James (Ordnance Survey)
Lieutenant General Sir Henry James (1803 – 1877) was a Royal Engineers officer who served as the director-general of the Ordnance Survey, the British Government mapping agency, from 1854 to 1875. Sir Henry was described by the agency itself as "perhaps Ordnance Survey's most eccentric and egotistical Director General".A brief history of Ordnance Survey , . Sir Henry spent most of his life working for the Ordnance Survey and after becoming its head he introduced the new science of photography. He also would later claim to be the inventor of the process known as |
Ordnance Survey
The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see Artillery, ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of 1745. There was also a more general and nationwide need in light of the potential threat of invasion during the Napoleonic Wars. Since 1 April 2015, the Ordnance Survey has operated as Ordnance Survey Ltd, a state-owned enterprise, government-owned company, 100% in public ownership. The Ordnance Survey Board remains accountable to the Secretary of State for Science, Innovation and Technology. It was also a member of the Public Data Group. Paper maps represent only 5% of the company's annual revenue. It produces digital map data, online route planning and sharing services and mobile apps, plus many other location-based products for business, government and consumers. Ordnance Survey mapping is usually classified as either "Scale (map), lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parliament Of The United Kingdom
The Parliament of the United Kingdom of Great Britain and Northern Ireland is the supreme legislative body of the United Kingdom, and may also legislate for the Crown Dependencies and the British Overseas Territories. It meets at the Palace of Westminster in London. Parliament possesses legislative supremacy and thereby holds ultimate power over all other political bodies in the United Kingdom and the Overseas Territories. While Parliament is bicameral, it has three parts: the sovereign, the House of Lords, and the House of Commons. The three parts acting together to legislate may be described as the King-in-Parliament. The Crown normally acts on the advice of the prime minister, and the powers of the House of Lords are limited to only delaying legislation. The House of Commons is the elected lower chamber of Parliament, with elections to 650 single-member constituencies held at least every five years under the first-past-the-post system. By constitutional conventi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Processes Dating From The 19th Century
Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing (e.g., photolithography), and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication. A person who operates a camera to capture or take photographs is called a photographer, while the captured image, also known as a photograph, is the result produced by the camera. Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing. The result w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gum Bichromate
Gum printing is a way of making photographic reproductions without the use of silver halides. The process uses salts of dichromate in common with a number of other related processes such as sun printing. Gum prints tend to be multi-layered images sometimes combined with other alternative process printing methods such as cyanotype and platinotype. A heavy weight cotton watercolor or printmaking paper that can withstand repeated and extended soakings is best. Each layer of pigment is individually coated, registered, exposed and washed. Separation negatives of cyan, magenta, and yellow or red, green, and blue are used for a full-color image. Some photographers prefer substituting the cyan emulsion in the CMYK separations with a cyanotype layer. A simple duotone separation combining orange watercolor pigment and a cyanotype can yield surprisingly beautiful results. History Gum bichromate, or gum dichromate as it is also known, is a photographic printing process invented in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photography
Photography is the visual arts, art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing (e.g., photolithography), and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication. A person who operates a camera to capture or take Photograph, photographs is called a photographer, while the captured image, also known as a photograph, is the result produced by the camera. Typically, a lens is used to focus (optics), focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed Exposure (photography), exposure. With an electronic image sensor, this produces an Charge-coupled device, electrical charge at each pixel, which is Image processing, electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anastatic Lithography
Anastatic lithography is a method of printing developed by 1840 in Erfurt. The technique provided a means for facsimile reproduction, which was developed and promoted by Werner and William Siemens. The reproduction of the four pages of the 25 September 1841 issue of '' The Athenaeum'', a London scientific and literary journal, was so true to the original that it caused concerns expressed in an article "Printing and Piracy–New Discovery" which was published in the issue No. 736 published December 4, 1841. See also * Bibliography of early American publishers and printers Bibliography of early American publishers and printers is a selection of books, journals and other sigmass devoted to these topics covering their careers and other activities before, during and after the American Revolution. Various works that ... References {{reflist History of printing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isabella II
Isabella II (, María Isabel Luisa de Borbón y Borbón-Dos Sicilias; 10 October 1830 – 9 April 1904) was Queen of Spain from 1833 until her deposition in 1868. She is the only queen regnant in the history of unified Spain. Isabella was the elder daughter of King Ferdinand VII and Queen Maria Christina. Shortly before Isabella's birth, her father issued the Pragmatic Sanction to revert the Salic Law and ensure the succession of his firstborn daughter, due to his lack of a son. She came to the throne a month before her third birthday, but her succession was disputed by her uncle Infante Carlos (founder of the Carlist movement), whose refusal to recognize a female sovereign led to the Carlist Wars. Under the regency of her mother, Spain transitioned from an absolute monarchy to a constitutional monarchy, adopting the Royal Statute of 1834 and Constitution of 1837. Isabella was declared of age and began her personal rule in 1843. Her effective reign was a period marke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford Dictionary Of National Biography
The ''Dictionary of National Biography'' (''DNB'') is a standard work of reference on notable figures from History of the British Isles, British history, published since 1885. The updated ''Oxford Dictionary of National Biography'' (''ODNB'') was published on 23 September 2004 in 60 volumes and online, with 50,113 biographical articles covering 54,922 lives. First series Hoping to emulate national biography, biographical collections published elsewhere in Europe, such as the (1875), in 1882 the publisher George Murray Smith, George Smith (1824–1901), of Smith, Elder & Co., planned a universal dictionary that would include biographical entries on individuals from world history. He approached Leslie Stephen, then editor of the ''Cornhill Magazine'', owned by Smith, to become the editor. Stephen persuaded Smith that the work should focus only on subjects from the United Kingdom and its present and former colonies. An early working title was the ''Biographia Britannica'', the na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Walter Osborne
John Walter Osborne (20 February 1828 – 20 November 1902) was a chemist and engineer born in Ireland, who migrated to Victoria, Australia and in Melbourne pioneered the art of photo-lithography. History Osborne was born in Ireland, and received an excellent education. He emigrated to Melbourne with his wife Anne on the ''Peru'', listed as "engineer" (though he was later described as an analytical chemist), arriving on Christmas Day 1852.Jean Gittins, 'Osborne, John Walter (1828–1902)', Australian Dictionary of Biography, National Centre of Biography, Australian National University, http://adb.anu.edu.au/biography/osborne-john-walter-4343/text7051, published first in hardcopy 1974. Retrieved 26 June 2016. In 1857 he was employed as an assistant to Professor George Neumayer at the Flagstaff Hill magnetic observatory, a project funded by the King of Bavaria. In February 1859 he left to take up a position with the Crown Lands Office (Survey Department of the Office of Crown L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domesday Zinco Somerset Glastonbury
Domesday Book ( ; the Middle English spelling of "Doomsday Book") is a manuscript record of the Great Survey of much of England and parts of Wales completed in 1086 at the behest of William the Conqueror. The manuscript was originally known by the Latin name , meaning "Book of Winchester", where it was originally kept in the royal treasury. The ''Anglo-Saxon Chronicle'' states that in 1085 the king sent his agents to survey every shire in England, to list his holdings and dues owed to him. Written in Medieval Latin, it was highly abbreviated and included some vernacular native terms without Latin equivalents. The survey's main purpose was to record the annual value of every piece of landed property to its lord, and the resources in land, labour force, and livestock from which the value derived. The name "Domesday Book" came into use in the 12th century. Richard FitzNeal wrote in the ( 1179) that the book was so called because its decisions were unalterable, like those of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
