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Writing Slate
A slate is a thin piece of hard flat material, historically Slate, slate stone, which is used as a medium for writing on. Writing on a slate is impermanent and easily erased, and the same slate is then reused. Usage The writing slate consisted of a piece of slate, typically either 4x6 inches or 7x10 inches, encased in a wooden frame. Split slate was prepared by scraping with a steel edge, grinding with a flat stone and, finally, polishing with a mix of slate powder in water. Pencils were of a softer stone, such as shale, chalk or soapstone. In 1853 Charles Goodyear patented a compound of vulcanised rubber, hard-vulcanised rubber with powdered porcelain, from which to make white pencils for writing on slates. Usually, a piece of cloth or slate sponge, sometimes attached with a string to the bottom of the writing slate, was used to erase it for reuse. History The exact origins of the writing slate remain unclear. References to its use can be found in the fourteenth century an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic Sea to the south-west. , it had a population of 3.2 million. It has a total area of and over of Coastline of Wales, coastline. It is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperate climate, north temperate zone and has a changeable, Oceanic climate, maritime climate. Its capital and largest city is Cardiff. A distinct Culture of Wales, Welsh culture emerged among the Celtic Britons after the End of Roman rule in Britain, Roman withdrawal from Britain in the 5th century, and Wales was briefly united under Gruffudd ap Llywelyn in 1055. After over 200 years of war, the Conquest of Wales by Edward I, conquest of Wales by King Edward I o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australasian Society For Historical Archaeology
The Australasian Society for Historical Archaeology (ASHA) was founded as the Australian Society for Historical Archaeology in 1970 by Judy Birmingham (University of Sydney). Its aims are to promote the study of historical archaeology in Australia. Origins ASHA came out of the developing interest in archaeology in Australia in the 1970s, and in particular the increasing interest generated by uncovering of Colonial period archaeology in Port Arthur, Sydney Cove, The Rocks and other parts of New South Wales, as well as the first historical archaeology course at the University of Sydney, in 1974. In 1991 the society was extended to include New Zealand and the Asia-Pacific region generally, and its name was changed to the Australasian Society for Historical Archaeology. In the mid-1990s the Society's committee moved from being Sydney based to being a more Australasian wide committee (Neville Ritchie, the then president lived in New Zealand) reflecting the growth of historical ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackboard
A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, better known as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone. Design A blackboard can simply be a board painted with a dark matte (surface), matte paint (usually black, occasionally dark green). Matte black plastic sign material (known as closed-cell PVC foamboard) is also used to create custom chalkboard art. Blackboards on an A-frame are used by restaurants and bars to advertise daily specials. Adhesive chalkboard surface is also available in stores as rolls of textured black plastic shelf covering, which is applied to the desired wall, door or other surface. A more modern variation consists of a coiled sheet of plastic drawn across two parallel rollers, which can be scrolled to create additional writing space while saving what has been written. The highest grade blackboards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clay Tablet
In the Ancient Near East, clay tablets (Akkadian language, Akkadian ) were used as a writing medium, especially for writing in cuneiform, throughout the Bronze Age and well into the Iron Age. Cuneiform characters were imprinted on a wet clay tablet with a stylus often made of Reed (plant), reed (reed pen). Once written upon, many tablets were dried in the sun or air, remaining fragile. Later, these unfired clay tablets could be soaked in water and recycled into new clean tablets. Other tablets, once written, were either deliberately fired in hot kilns, or inadvertently fired when buildings were burnt down by accident or during conflict, making them hard and durable. Collections of these clay documents made up the first archives. They were at the root of the first library, libraries. Tens of thousands of written tablets, including many fragments, have been found in the Middle East. Most of the documents on tablets that survive from the Minoan civilization, Minoan and Mycenaean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographical Location
In geography, location or place is used to denote a region (point, line, or area) on Earth's surface. The term ''location'' generally implies a higher degree of certainty than ''place'', the latter often indicating an entity with an ambiguous boundary, relying more on human or social attributes of place identity and sense of place than on geometry. A populated place is called a '' settlement''. Types Locality A locality, settlement, or populated place is likely to have a well-defined name but a boundary that is not well defined, but rather varies by context. London, for instance, has a legal boundary, but this is unlikely to completely match with general usage. An area within a town, such as Covent Garden in London, also almost always has some ambiguity as to its extent. In geography, location is considered to be more precise than "place". Relative location A relative location, or situation, is described as a displacement from another site. gta6 Absolute location An absolut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classroom
A classroom, schoolroom or lecture room is a learning space in which both children and adults learn. Classrooms are found in educational institutions of all kinds, ranging from preschools to universities, and may also be found in other places where education or training is provided, such as corporations and religious and humanitarian organizations. The classroom provides a space where learning can take place uninterrupted by outside distractions. Types of classroom In elementary schools (from Kindergarten through 5th grade), classrooms can have a whole group of 18 to 30 students (in some cases these numbers may differ) and one, two, or even three teachers. When there are two teachers in a classroom, one is the lead teacher and the other one is the assistant teacher. Or the second teacher might be a special education teacher. There may be a third teacher in the back watching and taking notes. In lower elementary the classrooms are set up slightly different from upper elem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slate Industry
The slate industry is the industry related to the extraction and processing of slate. Slate is either quarried from a ''slate quarry'' or reached by tunneling in a ''slate mine''. Common uses for slate include as a roofing material, a flooring material, gravestones and memorial tablets, and electrical insulation. Slate mines are found around the world. 90% of Europe's natural slate used for roofing originates from the Slate Industry in Spain.European Association of Mining Industries website retrieved on 26/01/2010 The major slate mining region in the United Kingdom is the Lake district, with Honister slate mine being the last working slate mine, the only producers of the world famous Westmorland greenslate. In the remainder of Continental Europe and the |
Land Transport
Land transport is the transport or movement of people, animals or goods from one location to another location on land. This is in contrast with other main types of transport such as maritime transport and aviation. The two main forms of land transport can be considered to be rail transport and road transport. Systems Several systems of land transport have been devised, from the most basic system of humans carrying things from place to sophisticated networks of ground-based transportation using different types of vehicles and infrastructure. The three types are human-powered, animal powered and machine powered Human-powered transportation Human-powered transport, a form of sustainable transportation, is the transport of people and/or goods using human muscle-power, in the form of walking, running and swimming. Modern technology has allowed machines to enhance human power. Human-powered transport remains popular for reasons of cost-saving, leisure, physical exercise, and enviro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slate
Slate is a fine-grained, foliated, homogeneous, metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade, regional metamorphism. It is the finest-grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression. The foliation in slate, called " slaty cleavage", is caused by strong compression in which fine-grained clay forms flakes to regrow in planes perpendicular to the compression. When expertly "cut" by striking parallel to the foliation with a specialized tool in the quarry, many slates display a property called fissility, forming smooth, flat sheets of stone which have long been used for roofing, floor tiles, and other purposes. Slate is frequently grey in color, especially when seen ''en masse'' covering roofs. However, slate occurs in a variety of colors even from a single locality; for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyre & Spottiswoode
Eyre & Spottiswoode was the London-based printing firm established in 1739 that was the King's Printer, and subsequently, a publisher prior to being incorporated; it once went by the name of Spottiswoode, Ballantyne & co. ltd. In April 1929, it was incorporated as Eyre & Spottiswoode (Publishers) Ltd.. It became part of Associated Book Publishers in 1958 and merged with Methuen in the 1970s with the resulting company known as Eyre Methuen. History The business that became Eyre & Spottiswoode was founded by William Strahan in 1739. His son Andrew inherited the business upon William's death in 1785. Brothers Robert and Andrew Spottiswoode took over management for their uncle Andrew Stahan in 1819 and continued until 1832. In the 19th century, the firm had a printing works at Shacklewell. The firm was re-appointed King's Printer after the accession of King Edward VII in May 1901. Douglas Jerrold became a director in 1929, when it incorporated as a publishing house, became c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
