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Mungo Ponton
Mungo Ponton FRS FRSE (20 November 1801 – 3 August 1880) was a Scottish inventor who in 1839 created a method of permanent photography based on potassium dichromate. Life and family Ponton was born in the Balgreen district of west Edinburgh, the son of John Ponton, a farmer. He was named after the explorer Mungo Park, then a new Scottish hero. In 1815 he was apprenticed as a lawyer to James Balfour WS (of Pilrig House), working at chambers at 17 Broughton Street in the eastern New Town of Edinburgh. He finished his apprenticeship at GL Finlay WS at 18 Queen Street. He was created a Writer to the Signet on 8 December 1825. He then went into partnership with AW Goldie to create Goldie & Ponton WS based at 58 India Street in the western New Town. He married Helen Scott Campbell on 24 June 1830 and together they had seven children. In the 1830s Ponton was listed as living at 30 Melville Street, a large new terraced townhouse in Edinburgh's west end, presumably the family's ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mungo Ponton
Mungo Ponton FRS FRSE (20 November 1801 – 3 August 1880) was a Scottish inventor who in 1839 created a method of permanent photography based on potassium dichromate. Life and family Ponton was born in the Balgreen district of west Edinburgh, the son of John Ponton, a farmer. He was named after the explorer Mungo Park, then a new Scottish hero. In 1815 he was apprenticed as a lawyer to James Balfour WS (of Pilrig House), working at chambers at 17 Broughton Street in the eastern New Town of Edinburgh. He finished his apprenticeship at GL Finlay WS at 18 Queen Street. He was created a Writer to the Signet on 8 December 1825. He then went into partnership with AW Goldie to create Goldie & Ponton WS based at 58 India Street in the western New Town. He married Helen Scott Campbell on 24 June 1830 and together they had seven children. In the 1830s Ponton was listed as living at 30 Melville Street, a large new terraced townhouse in Edinburgh's west end, presumably the family's ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Stewart Traill
Thomas Stewart Traill (29 October 1781 – 30 July 1862) was a British physician, chemist, meteorologist, zoologist and scholar of medical jurisprudence. He was the grandfather of the physicist, meteorologist and geologist Robert Traill Omond FRSE (1858-1914). Early life Traill was born at Kirkwall in Orkney, the son of the Rev Thomas Traill (died 1782), the minister in Kirkwall, and his wife Lucia. His father died the year after he was born. He studied medicine at the University of Edinburgh, gaining his doctorate (MD) in 1802. He was elected a Fellow of the Royal Society of Edinburgh in 1819. His proposers were Robert Jameson, John Murray, Lord Murray, and Thomas Charles Hope. He was Curator of the Society's museum from 1834 to 1856. He practised medicine for 30 years in Liverpool, and was a founder of the Royal Institution of Liverpool, the Liverpool Mechanics' Institution and the Literary and Philosophical Society of Liverpool. He became acquainted with the Arctic exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calotype
Calotype or talbotype is an early photographic process introduced in 1841 by William Henry Fox Talbot, using paper coated with silver iodide. Paper texture effects in calotype photography limit the ability of this early process to record low contrast details and textures. The term ''calotype'' comes from the Ancient Greek (), "beautiful", and (), "impression". The process Talbot made his first successful camera photographs in 1835 using paper sensitised with silver chloride, which darkened in proportion to its exposure to light. This early "photogenic drawing" process was a ''printing-out'' process, i.e., the paper had to be exposed in the camera until the image was fully visible. A very long exposure—typically an hour or more—was required to produce an acceptable negative. In late 1840, Talbot worked out a very different ''developing-out'' process (a concept pioneered by the daguerreotype process introduced in 1839), in which only an extremely faint or completely invi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photoresist
A photoresist (also known simply as a resist) is a light-sensitive material used in several processes, such as photolithography and photoengraving, to form a patterned coating on a surface. This process is crucial in the electronic industry. The process begins by coating a substrate with a light-sensitive organic material. A patterned mask is then applied to the surface to block light, so that only unmasked regions of the material will be exposed to light. A solvent, called a developer, is then applied to the surface. In the case of a positive photoresist, the photo-sensitive material is degraded by light and the developer will dissolve away the regions that were exposed to light, leaving behind a coating where the mask was placed. In the case of a negative photoresist, the photosensitive material is strengthened (either polymerized or cross-linked) by light, and the developer will dissolve away only the regions that were not exposed to light, leaving behind a coating in areas w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gum Bichromate
Gum bichromate is a 19th-century photographic printing process based on the light sensitivity of dichromates. It is capable of rendering painterly images from photographic negatives. Gum printing is traditionally a multi-layered printing process, but satisfactory results may be obtained from a single pass. Any color can be used for gum printing, so natural-color photographs are also possible by using this technique in layers. History and process overview Gum bichromate, or gum dichromate as it is also known, is a photographic printing process invented in the early days of photography when, in 1839, Mungo Ponton discovered that dichromates are light sensitive. William Henry Fox Talbot later found that sensitized dichromated colloids such as gelatin and gum arabic became insoluble in water after exposure to sunlight. Alphonse Poitevin added carbon pigment to the colloids in 1855, creating the first carbon print. In 1858, John Pouncy used colored pigment with gum arabic to creat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Pouncey
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died c. AD 30), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (lived c. AD 30), one of the twelve apostles of Jesus * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * Pope John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edinburgh New Philosophical Journal
The ''Edinburgh Philosophical Journal'' was founded by its editors Robert Jameson and David Brewster in 1819 as a scientific journal to publish articles on the latest science of the day. In 1826 the two editors fell out, and Jameson continued publication as the ''Edinburgh New Philosophical Journal''. Jameson died in 1854, and his place as editor was then taken over by Thomas Anderson, Sir William Jardine, John Hutton Balfour and, for America, Henry Darwin Rogers. In 1864 it was merged into the ''Quarterly Journal of Science'', London. The ''Edinburgh Philosophical Journal'' was published by Archibald Constable and Company, then in 1826 publication of the ''Edinburgh New Philosophical Journal'' was taken on by Adam Black, later A & C Black of Edinburgh. The journal covered emerging scientific developments in chemistry, optics, electricity, magnetism, and natural history, as well as related topics including practical mechanics, inventions, and scientific instruments. As well as ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Fox Talbot
William Henry Fox Talbot FRS FRSE FRAS (; 11 February 180017 September 1877) was an English scientist, inventor, and photography pioneer who invented the salted paper and calotype processes, precursors to photographic processes of the later 19th and 20th centuries. His work in the 1840s on photomechanical reproduction led to the creation of the photoglyphic engraving process, the precursor to photogravure. He was the holder of a controversial patent that affected the early development of commercial photography in Britain. He was also a noted photographer who contributed to the development of photography as an artistic medium. He published '' The Pencil of Nature'' (1844–46), which was illustrated with original salted paper prints from his calotype negatives and made some important early photographs of Oxford, Paris, Reading, and York. A polymath, Talbot was elected to the Royal Society in 1831 for his work on the integral calculus, and researched in optics, chemistry, ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Telegraph
Electrical telegraphs were point-to-point text messaging systems, primarily used from the 1840s until the late 20th century. It was the first electrical telecommunications system and the most widely used of a number of early messaging systems called ''telegraphs'', that were devised to communicate text messages quicker than physical transportation. Electrical telegraphy can be considered to be the first example of electrical engineering. Text telegraphy consisted of two or more geographically separated stations, called telegraph offices. The offices were connected by wires, usually supported overhead on utility poles. Many different electrical telegraph systems were invented, but the ones that became widespread fit into two broad categories. The first category consists of needle telegraphs in which a needle pointer is made to move electromagnetically with an electric current sent down the telegraph line. Early systems used multiple needles requiring multiple wires. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scottish Society Of Arts
The Royal Scottish Society of Arts is a learned society in Scotland, dedicated to the study of science and technology. It was founded as The Society for the Encouragement of the Useful Arts in Scotland by Sir David Brewster in 1821 and dedicated to ''"the promotion of invention and enterprise"''. The Society was granted a Royal Charter in 1841. Background For many years the promotion of invention and improvements of all sorts was the main business of the Society, and its meetings were the focus of a large and active cross-section of Edinburgh society - academics, gentry, professionals such as civil engineers and lawyers, and skilled craftsmen such as instrument makers, engravers and printers. The Society's published Transactions provide a record of changes in technology, and the Society's archive is held by the National Library of Scotland, and is a valuable resource to researchers. In more recent times, the Society's meeting programme has been based on lectures given by expert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
