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Slate And Stylus
The slate and stylus are tools used by blind people to write text that they can read without assistance.Alpha Chi Omega (1908) Invented by Charles Barbier as the tool for writing letters that could be read by touch, the slate and stylus allow for a quick, easy, convenient and constant method of making embossed printing for Braille character encoding. Prior methods of making raised printing for the blind required a movable type printing press. Design The basic design of the slate consists of two pieces of metal, plastic or wood fastened together with a hinge at one side.Harry Houdini Collection (1888) The back part of the slate is solid with slight depressions spaced in braille cells of six dots each. The depressions are approximately deep and about in diameter. The horizontal and vertical spacing between dots within a cell is approximately , while the distance between adjacent cells is about . The front of the slate consists of rectangular windows that fit over the braill ...
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Wax Tablet
A wax tablet is a tablet made of wood and covered with a layer of wax, often linked loosely to a cover tablet, as a "double-leaved" diptych. It was used as a reusable and portable writing surface in Antiquity and throughout the Middle Ages. Cicero's letters make passing reference to the use of ''cerae'', and some examples of wax-tablets have been preserved in waterlogged deposits in the Roman fort at Vindolanda on Hadrian's Wall. Medieval wax tablet books are on display in several European museums. Writing on the wax surface was performed with a pointed instrument, a stylus. A straight-edged spatula-like implement (often placed on the opposite end of the stylus tip) would be used as an eraser. The modern expression of ''"a clean slate"'' equates to the Latin expression ''"tabula rasa"''. Wax tablets were used for a variety of purposes, from taking down students' or secretaries' notes to recording business accounts. Early forms of shorthand were used too. Use in antiquity ...
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Six Principal Systems Of Embossed Type
6 is a number, numeral, and glyph. 6 or six may also refer to: * AD 6, the sixth year of the AD era * 6 BC, the sixth year before the AD era * The month of June Science * Carbon, the element with atomic number 6 * 6 Hebe, an asteroid People * Alphonse Six (1890–1914), Belgian football player * Didier Six (born 1954), former French international footballer * Franz Six (1909–1975), Nazi official * Frederick N. Six (born 1929), Justice of the Kansas Supreme Court * James Six (1731–1793), British scientist * Jan Six (1616-1700), an important cultural figure in the Dutch Golden Age * Robert Six (1907–1986), Chief Executive Officer of Continental Airlines between 1936 and 1981 * Regine Sixt, German businessperson * Valérie Six (born 1963), French politician * Perri 6 (an extremely rare surname), social scientist * Six family, family of regents of Amsterdam, founded by Jan Six Music * Six (band), an Irish pop band created by a TV reality show * ''Six'' (musical), a musi ...
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University Of Cambridge
, mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Scholars of the University of Cambridge , type = Public research university , endowment = £7.121 billion (including colleges) , budget = £2.308 billion (excluding colleges) , chancellor = The Lord Sainsbury of Turville , vice_chancellor = Anthony Freeling , students = 24,450 (2020) , undergrad = 12,850 (2020) , postgrad = 11,600 (2020) , city = Cambridge , country = England , campus_type = , sporting_affiliations = The Sporting Blue , colours = Cambridge Blue , website = , logo = University of Cambridge logo ...
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Lucasian Professor Of Mathematics
The Lucasian Chair of Mathematics () is a mathematics professorship in the University of Cambridge, England; its holder is known as the Lucasian Professor. The post was founded in 1663 by Henry Lucas, who was Cambridge University's Member of Parliament in 1639–1640, and it was officially established by King Charles II on 18 January 1664. It was described by ''The Daily Telegraph'' as one of the most prestigious academic posts in the world. Since its establishment, the professorship has been held by, among others, Isaac Newton, Charles Babbage, George Stokes, Joseph Larmor, Paul Dirac, and Stephen Hawking. History Henry Lucas, in his will, bequeathed his library of 4,000 volumes to the university and left instructions for the purchase of land whose yielding should provide £100 a year for the founding of a professorship. Babbage applied for the vacancy in 1826, after Turton, but Airy was appointed. William Whewell (who considered applying, but preferred both Hersc ...
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Nicholas Saunderson
Nicholas Saunderson (20 January 1682 – 19 April 1739) was a blind English scientist and mathematician. According to one historian of statistics, he may have been the earliest discoverer of Bayes' theorem. He worked as Lucasian Professor of Mathematics at Cambridge University, a post also held by Isaac Newton, Charles Babbage and Stephen Hawking. Biography Saunderson was born at Thurlstone, Yorkshire, in January 1682. His parents were John and Ann Sanderson (or Saunderson), and his father made a living as an excise man. When he was about a year old, he lost his sight through smallpox; but this did not prevent him from learning arithmetic through assisting his father. As a child, he is also thought to have learnt to read by tracing the engravings on tombstones around St John the Baptist Church in Penistone with his fingers. His early education was at the free school, Penistone Grammar School where he learnt French, Latin and Greek. In 1700 a tutor taught him algebra and ge ...
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Essai Sur L'éducation Des Aveugles
An essay is, generally, a piece of writing that gives the author's own argument, but the definition is vague, overlapping with those of a letter, a paper, an article, a pamphlet, and a short story. Essays have been sub-classified as formal and informal: formal essays are characterized by "serious purpose, dignity, logical organization, length," whereas the informal essay is characterized by "the personal element (self-revelation, individual tastes and experiences, confidential manner), humor, graceful style, rambling structure, unconventionality or novelty of theme," etc. Essays are commonly used as literary criticism, political manifestos, learned arguments, observations of daily life, recollections, and reflections of the author. Almost all modern essays are written in prose, but works in verse have been dubbed essays (e.g., Alexander Pope's ''An Essay on Criticism'' and ''An Essay on Man''). While brevity usually defines an essay, voluminous works like John Locke's ''A ...
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Church Of Saint-Germain-des-Prés
Church may refer to: Religion * Church (building), a building for Christian religious activities * Church (congregation), a local congregation of a Christian denomination * Church service, a formalized period of Christian communal worship * Christian denomination, a Christian organization with distinct doctrine and practice * Christian Church, either the collective body of all Christian believers, or early Christianity Places United Kingdom * Church (Liverpool ward), a Liverpool City Council ward * Church (Reading ward), a Reading Borough Council ward * Church (Sefton ward), a Metropolitan Borough of Sefton ward * Church, Lancashire, England United States * Church, Iowa, an unincorporated community * Church Lake, a lake in Minnesota Arts, entertainment, and media * '' Church magazine'', a pastoral theology magazine published by the National Pastoral Life Center Fictional entities * Church (''Red vs. Blue''), a fictional character in the video web series ''Red vs. Blue'' ...
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Latin Alphabet
The Latin alphabet or Roman alphabet is the collection of letters originally used by the ancient Romans to write the Latin language. Largely unaltered with the exception of extensions (such as diacritics), it used to write English and the other modern European languages. With modifications, it is also used for other alphabets, such as the Vietnamese alphabet. Its modern repertoire is standardised as the ISO basic Latin alphabet. Etymology The term ''Latin alphabet'' may refer to either the alphabet used to write Latin (as described in this article) or other alphabets based on the Latin script, which is the basic set of letters common to the various alphabets descended from the classical Latin alphabet, such as the English alphabet. These Latin-script alphabets may discard letters, like the Rotokas alphabet, or add new letters, like the Danish and Norwegian alphabets. Letter shapes have evolved over the centuries, including the development in Medieval Latin of lower-case, fo ...
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Paper Embossing
Embossing and debossing are the processes of creating either raised or recessed relief images and designs in paper and other materials. An embossed pattern is raised against the background, while a debossed pattern is sunken into the surface of the material but might protrude somewhat on the reverse side. Techniques Often used in combination with foil stamping, embossing alters the surface of paper stock or other substrates by providing a three-dimensional or raised effect on selected areas. The procedure requires the use of two dies: one that is raised and one that is recessed. The dies fit into each other so that when the paper is pressed between them, the raised die forces the stock into the recessed die and creates the embossed impression. A specific level of pressure is applied to the dies in order to squeeze the fibers of the paper, which results in a permanently raised area in the paper. When the dies are produced, a die maker engraves the desired image into several me ...
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Valentin Haüy
Valentin Haüy (pronounced ; 13 November 1745 – 19 March 1822) was the founder, in 1785, of the first school for the blind, the Institute for Blind Youth in Paris (now Institut National des Jeunes Aveugles, or the ''National Institute for the Young Blind'', INJA). In 1819, Louis Braille entered this school. Life Haüy was born into a family of weavers. His father, a full-time loomer, also held the job of ringing the Angelus bells in a local Premonstrant Abbey. The abbey monks educated Valentin and he became a skilled linguist speaking ten different languages of the day. He also studied ancient Greek and Hebrew. In 1783, he gained the title "interpreter to the king", Louis XVI. In 1786, he was the interpreter of the King, to the Admiralty and the City Hall. He was a member of the Office of Writing. Haüy's impulse to help the blind started in 1771, after he stopped for lunch in a cafe on the Place de la Concorde, Paris. There, he witnessed an ensemble of people from th ...
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Screen Reader
A screen reader is a form of assistive technology (AT) that renders text and image content as speech or braille output. Screen readers are essential to people who are blindness, blind, and are useful to people who are visual impairment, visually impaired, Illiteracy, illiterate, or have a learning disability. Screen readers are Application software, software applications that attempt to convey what people with normal eyesight see on a Display device, display to their users via non-visual means, like text-to-speech, sound icons, or a Refreshable Braille display, braille device. They do this by applying a wide variety of techniques that include, for example, interacting with dedicated #Accessibility APIs, accessibility APIs, using various operating system features (like inter-process communication and querying user interface properties), and employing hooking techniques. Microsoft Windows operating systems have included the Microsoft Narrator screen reader since Windows 2000, thoug ...
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Moon Type
The Moon System of Embossed Reading (commonly known as the Moon writing, Moon alphabet, Moon script, Moon type, or Moon code) is a writing system for the blind, using embossed symbols mostly derived from the Latin script (but simplified). It is claimed by its supporters to be easier to understand than braille, though it is mainly used by people who have lost their sight as adults, and thus already have knowledge of the shapes of letters. History Moon type was developed by William Moon (1818—1894), a blind Englishman living in Brighton, East Sussex. After a bout of scarlet fever, Moon lost his sight at age 21 and became a teacher of blind children. He discovered that his pupils had great difficulty learning to read the existing styles of embossed reading codes, and devised his own system that would be "open and clear to the touch."Farrell, p. 102. Moon first formulated his ideas in 1843 and published the scheme in 1845. Moon is not as well known as braille, but it is a val ...
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