1.
Lathe
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Lathes are used in woodturning, metalworking, metal spinning, thermal spraying, parts reclamation, and glass-working. Lathes can be used to shape pottery, the design being the potters wheel. Most suitably equipped metalworking lathes can also be used to produce most solids of revolution, plane surfaces, ornamental lathes can produce three-dimensional solids of incredible complexity. The workpiece is held in place by either one or two centers, at least one of which can typically be moved horizontally to accommodate varying workpiece lengths. Other work-holding methods include clamping the work about the axis of rotation using a chuck or collet, or to a faceplate, using clamps or dogs. Examples of objects that can be produced on a lathe include candlestick holders, gun barrels, cue sticks, table legs, bowls, baseball bats, musical instruments, crankshafts, and camshafts. The lathe is an ancient tool, dating at least to ancient Egypt and known to be used in Assyria, the lathe was very important to the Industrial Revolution. It is known as the mother of machine tools, as it was the first machine tool that lead to the invention of other machine tools, the origin of turning dates to around 1300 BCE when the Ancient Egyptians first developed a two-person lathe. One person would turn the work piece with a rope while the other used a sharp tool to cut shapes in the wood. Ancient Rome improved the Egyptian design with the addition of a turning bow, in the Middle Ages a pedal replaced hand-operated turning, allowing a single person to rotate the piece while working with both hands. The pedal was usually connected to a pole, often a straight-grained sapling, the system today is called the spring pole lathe. Spring pole lathes were in use into the early 20th century. An important early lathe in the UK was the boring machine that was installed in 1772 in the Royal Arsenal in Woolwich. It was horse-powered and allowed for the production of more accurate. One of the key characteristics of this machine was that the workpiece was turning as opposed to the tool, henry Maudslay who later developed many improvements to the lathe worked at the Royal Arsenal from 1783 being exposed to this machine in the Verbruggen workshop. During the Industrial Revolution, mechanized power generated by water wheels or steam engines was transmitted to the lathe via line shafting, allowing faster and easier work, metalworking lathes evolved into heavier machines with thicker, more rigid parts. Between the late 19th and mid-20th centuries, individual electric motors at each lathe replaced line shafting as the power source, today manually controlled and CNC lathes coexist in the manufacturing industries. A lathe may or may not have legs, which sit on the floor, a lathe may be small and sit on a workbench or table, not requiring a stand
2.
Parapet
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A parapet is a barrier which is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto, the German equivalent Brustwehr has the same meaning. Parapets were originally used to defend buildings from attack, but today they are primarily used as guard rails. Parapets may be plain, embattled, perforated or panelled, which are not mutually exclusive terms, plain parapets are upward extensions of the wall, sometimes with a coping at the top and corbel below. Embattled parapets may be panelled, but are pierced, if not purely as stylistic device, perforated parapets are pierced in various designs such as circles, trefoils, or quatrefoils. Panelled parapets are ornamented by a series of panels, either oblong or square, and more or less enriched and these are common in the Decorated and Perpendicular periods. The Mosaic law prescribed parapets for newly constructed houses as a safety measure, the Mirror Wall at Sigiriya, Sri Lanka built between 477 and 495 AD is one of the few surviving protective parapet walls from antiquity. Built onto the side of Sigiriya Rock it ran for a distance of approximately 250 meters and provided protection from inclement weather. Only about one hundred meters of this exists today, but brick debris. Parapets surrounding roofs are common in London and this dates from the Building Act of 1707 which banned projecting wooden eaves in the cities of Westminster and London as a fire risk. Instead an 18-inch brick parapet was required, with the set behind. This was continued in many Georgian houses, as it gave the appearance of a roof which accorded with the desire for classical proportions. Many firewalls are required to have a parapet, a portion of the wall extending above the roof, the parapet is required to be as fire resistant as the lower wall, and extend a distance prescribed by building code. Parapets on bridges and other highway structures prevent users from falling off where there is a drop and they may also be meant to restrict views, to prevent rubbish passing below, and to act as noise barriers. Bridge parapets may be made any material, but structural steel, aluminium, timber. They may be of solid or framed construction, in European standards, parapets are defined as a sub-category of vehicle restraint systems or pedestrian restraint systems. In terms of fortification, a parapet is a wall of stone, wood or earth on the edge of a defensive wall or trench. In medieval castles, they were often crenellated, in later artillery forts, parapets tend to be higher and thicker
3.
Stairs
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A stairway, staircase, stairwell, flight of stairs, or simply stairs is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps. Stairs may be straight, round, or may consist of two or more straight pieces connected at angles, special types of stairs include escalators and ladders. Some alternatives to stairs are elevators, stairlifts and inclined moving walkways as well as stationary inclined sidewalks, a stair, or a stairstep is one step in a flight of stairs. In buildings, stairs is a term applied to a flight of steps between two floors. A stair flight is a run of stairs or steps between landings, a staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades and additional parts. A stairwell is a compartment extending vertically through a building in which stairs are placed. A stair hall is the stairs, landings, hallways, or other portions of the hall through which it is necessary to pass when going from the entrance floor to the other floors of a building. Box stairs are stairs built between walls, usually with no support except the wall strings, Stairs may be in a straight run, leading from one floor to another without a turn or change in direction. Stairs may change direction, commonly by two flights connected at a 90 degree angle landing. Stairs may also return onto themselves with 180 degree angle landings at each end of straight flights forming a vertical stairway commonly used in multistory, many variations of geometrical stairs may be formed of circular, elliptical and irregular constructions. Stairs may be a component of egress from structures and buildings. Stairs are also provided for convenience to access floors, roofs, levels, Stairs may also be a fanciful physical construct such as the stairs that go nowhere located at the Winchester Mystery House. Stairs are also a used in art to represent real or imaginary places built around impossible objects using geometric distortion. Stairway is also a metaphor for achievement or loss of a position in the society. Each step is composed of tread and riser, tread The part of the stairway that is stepped on. It is constructed to the specifications as any other flooring. The tread depth is measured from the edge of the step to the vertical riser between steps. The width is measured from one side to the other, riser The vertical portion between each tread on the stair
4.
Oxford English Dictionary
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The Oxford English Dictionary is a descriptive dictionary of the English language, published by the Oxford University Press. The second edition came to 21,728 pages in 20 volumes, in 1895, the title The Oxford English Dictionary was first used unofficially on the covers of the series, and in 1928 the full dictionary was republished in ten bound volumes. In 1933, the title The Oxford English Dictionary fully replaced the name in all occurrences in its reprinting as twelve volumes with a one-volume supplement. More supplements came over the years until 1989, when the edition was published. Since 2000, an edition of the dictionary has been underway. The first electronic version of the dictionary was available in 1988. The online version has been available since 2000, and as of April 2014 was receiving two million hits per month. The third edition of the dictionary will probably appear in electronic form, Nigel Portwood, chief executive of Oxford University Press. As a historical dictionary, the Oxford English Dictionary explains words by showing their development rather than merely their present-day usages, therefore, it shows definitions in the order that the sense of the word began being used, including word meanings which are no longer used. The format of the OEDs entries has influenced numerous other historical lexicography projects and this influenced later volumes of this and other lexicographical works. As of 30 November 2005, the Oxford English Dictionary contained approximately 301,100 main entries, the dictionarys latest, complete print edition was printed in 20 volumes, comprising 291,500 entries in 21,730 pages. The longest entry in the OED2 was for the verb set, as entries began to be revised for the OED3 in sequence starting from M, the longest entry became make in 2000, then put in 2007, then run in 2011. Despite its impressive size, the OED is neither the worlds largest nor the earliest exhaustive dictionary of a language, the Dutch dictionary Woordenboek der Nederlandsche Taal is the worlds largest dictionary, has similar aims to the OED and took twice as long to complete. Another earlier large dictionary is the Grimm brothers dictionary of the German language, begun in 1838, the official dictionary of Spanish is the Diccionario de la lengua española, and its first edition was published in 1780. The Kangxi dictionary of Chinese was published in 1716, trench suggested that a new, truly comprehensive dictionary was needed. On 7 January 1858, the Society formally adopted the idea of a new dictionary. Volunteer readers would be assigned particular books, copying passages illustrating word usage onto quotation slips, later the same year, the Society agreed to the project in principle, with the title A New English Dictionary on Historical Principles. He withdrew and Herbert Coleridge became the first editor, on 12 May 1860, Coleridges dictionary plan was published and research was started
5.
Relief
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Relief is a sculptural technique where the sculpted elements remain attached to a solid background of the same material. The term relief is from the Latin verb relevo, to raise, to create a sculpture in relief is to give the impression that the sculpted material has been raised above the background plane. What is actually performed when a relief is cut in from a surface of stone or wood is a lowering of the field. The technique involves considerable chiselling away of the background, which is a time-consuming exercise. In other materials such as metal, clay, plaster stucco, ceramics or papier-mâché the form can be just added to or raised up from the background, and monumental bronze reliefs are made by casting. There are different degrees of relief depending on the degree of projection of the form from the field. There is also sunk relief, which was restricted to Ancient Egypt. However the distinction between high relief and low relief is the clearest and most important, and these two are generally the only used to discuss most work. Hyphens may or may not be used in all these terms, works in the technique are described as in relief, and, especially in monumental sculpture, the work itself is a relief. Reliefs are common throughout the world on the walls of buildings and a variety of settings. Relief is more suitable for depicting complicated subjects with figures and very active poses, such as battles. Most ancient architectural reliefs were painted, which helped to define forms in low relief. Rock reliefs are carved into solid rock in the open air. This type is found in cultures, in particular those of the Ancient Near East and Buddhist countries. A stele is a standing stone, many of these carry reliefs. The distinction between high and low relief is somewhat subjective, and the two are often combined in a single work. In particular, most later high reliefs contain sections in low relief, a low relief or bas-relief is a projecting image with a shallow overall depth, for example used on coins, on which all images are in low relief. Other versions distort depth much less and it is a technique which requires less work, and is therefore cheaper to produce, as less of the background needs to be removed in a carving, or less modelling is required
6.
Assyria
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Assyria was a major Mesopotamian East Semitic-speaking kingdom and empire of the ancient Near East and the Levant. Centered on the Tigris in Upper Mesopotamia, the Assyrians came to rule powerful empires at several times. Assyria is named after its capital, the ancient city of Aššur. In the 25th and 24th centuries BC, Assyrian kings were pastoral leaders, Assyria can also refer to the geographic region or heartland where Assyria, its empires and the Assyrian people were centered. The indigenous modern Eastern Aramaic-speaking Assyrian Christian ethnic minority in northern Iraq, north east Syria, southeast Turkey, in prehistoric times, the region that was to become known as Assyria was home to a Neanderthal culture such as has been found at the Shanidar Cave. The earliest Neolithic sites in Assyria were the Jarmo culture c.7100 BC and Tell Hassuna, during the 3rd millennium BC, a very intimate cultural symbiosis developed between the Sumerians and the Akkadians throughout Mesopotamia, which included widespread bilingualism. The influence of Sumerian on Akkadian, and vice versa, is evident in all areas, from lexical borrowing on a scale, to syntactic, morphological. This has prompted scholars to refer to Sumerian and Akkadian in the third millennium BC as a sprachbund and it is highly likely that the city was named in honour of its patron Assyrian god with the same name. The city of Aššur, together with a number of other Assyrian cities, however it is likely that they were initially Sumerian-dominated administrative centres. In the late 26th century BC, Eannatum of Lagash, then the dominant Sumerian ruler in Mesopotamia, similarly, in c. the early 25th century BC, Lugal-Anne-Mundu the king of the Sumerian state of Adab lists Subartu as paying tribute to him. Of the early history of the kingdom of Assyria, little is known, in the Assyrian King List, the earliest king recorded was Tudiya. According to Georges Roux he would have lived in the mid 25th century BC, Tudiya was succeeded on the list by Adamu, the first known reference to the Semitic name Adam and then a further thirteen rulers. The earliest kings, such as Tudiya, who are recorded as kings who lived in tents, were independent semi-nomadic pastoralist rulers and these kings at some point became fully urbanised and founded the city state of Ashur in the mid 21st century BC. During the Akkadian Empire, the Assyrians, like all the Mesopotamian Semites, became subject to the dynasty of the city state of Akkad, the Akkadian Empire founded by Sargon the Great claimed to encompass the surrounding four quarters. Assyrian rulers were subject to Sargon and his successors, and the city of Ashur became an administrative center of the Empire. On those tablets, Assyrian traders in Burushanda implored the help of their ruler, Sargon the Great, the name Hatti itself even appears in later accounts of his grandson, Naram-Sin, campaigning in Anatolia. Assyrian and Akkadian traders spread the use of writing in the form of the Mesopotamian cuneiform script to Asia Minor, the Akkadian Empire was destroyed by economic decline and internal civil war, followed by attacks from barbarian Gutian people in 2154 BC. The rulers of Assyria during the period between c.2154 BC and 2112 BC once again fully independent, as the Gutians are only known to have administered southern Mesopotamia
7.
Ionic order
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The Ionic order forms one of the three classical orders of classical architecture, the other two canonic orders being the Doric and the Corinthian. There are two orders, the Tuscan, and the rich variant of Corinthian called the composite order. The Ionic columns are the thinnest and smallest columns out of the three canonic orders, the Ionic capital is characterized by the use of volutes. The Ionic columns normally stand on a base which separates the shaft of the column from the stylobate or platform, since Vitruvius a female character has been ascribed to the Ionic, in contrast to the masculine Doric. The major features of the Ionic order are the volutes of its capital, the only tools required to design these features were a straight-edge, a right angle, string and a compass. Originally the volutes lay in a plane, then it was seen that they could be angled out on the corners. Ionic columns are most often fluted, after a little early experimentation, the number of hollow flutes in the shaft settled at 24. This standardization kept the fluting in a proportion to the diameter of the column at any scale. Roman fluting leaves a little of the surface between each hollow, Greek fluting runs out to a knife edge that was easily scarred. In some instances, the fluting has been omitted, mohr included 8 unfluted Ionic frontal columns on his 1928 design for the railroads St. Louis suburban stop Delmar Station. Pictorial often narrative bas-relief frieze carving provides a feature of the Ionic order. Roman and Renaissance practice condensed the height of the entablature by reducing the proportions of the architrave, the Ionic order originated in the mid-6th century BC in Ionia, the southwestern coastland and islands of Asia Minor settled by Ionian Greeks, where an Ionian dialect was spoken. The Ionic order column was being practiced in mainland Greece in the 5th century BC and it was most popular in the Archaic Period in Ionia. The first of the great Ionic temples was the Temple of Hera on Samos and it stood for only a decade before it was leveled by an earthquake. A longer-lasting 6th century Ionic temple was the Temple of Artemis at Ephesus, the Parthenon, although it conforms mainly to the Doric order, also has some Ionic elements. A more purely Ionic mode to be seen on the Athenian Acropolis is exemplified in the Erechtheum, following the conquests of Alexander the Great in the east, a few examples of the Ionic order can be found as far as Pakistan with the Jandial temple near Taxila. Several examples of capitals displaying Ionic influences can seen as far away as Patna, especially with the Pataliputra capital. Renaissance architectural theorists took his hints, to interpret the Ionic order as matronly in comparison to the Doric order, the Ionic is a natural order for post-Renaissance libraries and courts of justice, learned and civilized
8.
Ancient Greece
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Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 12th-9th centuries BC to the end of antiquity. Immediately following this period was the beginning of the Early Middle Ages and this was followed by the period of Classical Greece, an era that began with the Greco-Persian Wars, lasting from the 5th to 4th centuries BC. Due to the conquests by Alexander the Great of Macedonia, Hellenistic civilization flourished from Central Asia to the end of the Mediterranean Sea. Classical Greek culture, especially philosophy, had a influence on ancient Rome. For this reason Classical Greece is generally considered to be the culture which provided the foundation of modern Western culture and is considered the cradle of Western civilization. Classical Antiquity in the Mediterranean region is considered to have begun in the 8th century BC. Classical Antiquity in Greece is preceded by the Greek Dark Ages and this period is succeeded, around the 8th century BC, by the Orientalizing Period during which a strong influence of Syro-Hittite, Jewish, Assyrian, Phoenician and Egyptian cultures becomes apparent. The end of the Dark Ages is also dated to 776 BC. The Archaic period gives way to the Classical period around 500 BC, Ancient Periods Astronomical year numbering Dates are approximate, consult particular article for details The history of Greece during Classical Antiquity may be subdivided into five major periods. The earliest of these is the Archaic period, in which artists made larger free-standing sculptures in stiff, the Archaic period is often taken to end with the overthrow of the last tyrant of Athens and the start of Athenian Democracy in 508 BC. It was followed by the Classical period, characterized by a style which was considered by observers to be exemplary, i. e. classical, as shown in the Parthenon. This period saw the Greco-Persian Wars and the Rise of Macedon, following the Classical period was the Hellenistic period, during which Greek culture and power expanded into the Near and Middle East. This period begins with the death of Alexander and ends with the Roman conquest, Herodotus is widely known as the father of history, his Histories are eponymous of the entire field. Herodotus was succeeded by authors such as Thucydides, Xenophon, Demosthenes, Plato, most of these authors were either Athenian or pro-Athenian, which is why far more is known about the history and politics of Athens than those of many other cities. Their scope is limited by a focus on political, military and diplomatic history, ignoring economic. In the 8th century BC, Greece began to emerge from the Dark Ages which followed the fall of the Mycenaean civilization, literacy had been lost and Mycenaean script forgotten, but the Greeks adopted the Phoenician alphabet, modifying it to create the Greek alphabet. The Lelantine War is the earliest documented war of the ancient Greek period and it was fought between the important poleis of Chalcis and Eretria over the fertile Lelantine plain of Euboea. Both cities seem to have suffered a decline as result of the long war, a mercantile class arose in the first half of the 7th century BC, shown by the introduction of coinage in about 680 BC
9.
Ancient Rome
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In its many centuries of existence, the Roman state evolved from a monarchy to a classical republic and then to an increasingly autocratic empire. Through conquest and assimilation, it came to dominate the Mediterranean region and then Western Europe, Asia Minor, North Africa and it is often grouped into classical antiquity together with ancient Greece, and their similar cultures and societies are known as the Greco-Roman world. Ancient Roman civilisation has contributed to modern government, law, politics, engineering, art, literature, architecture, technology, warfare, religion, language and society. Rome professionalised and expanded its military and created a system of government called res publica, the inspiration for modern republics such as the United States and France. By the end of the Republic, Rome had conquered the lands around the Mediterranean and beyond, its domain extended from the Atlantic to Arabia, the Roman Empire emerged with the end of the Republic and the dictatorship of Augustus Caesar. 721 years of Roman-Persian Wars started in 92 BC with their first war against Parthia and it would become the longest conflict in human history, and have major lasting effects and consequences for both empires. Under Trajan, the Empire reached its territorial peak, Republican mores and traditions started to decline during the imperial period, with civil wars becoming a prelude common to the rise of a new emperor. Splinter states, such as the Palmyrene Empire, would divide the Empire during the crisis of the 3rd century. Plagued by internal instability and attacked by various migrating peoples, the part of the empire broke up into independent kingdoms in the 5th century. This splintering is a landmark historians use to divide the ancient period of history from the pre-medieval Dark Ages of Europe. King Numitor was deposed from his throne by his brother, Amulius, while Numitors daughter, Rhea Silvia, because Rhea Silvia was raped and impregnated by Mars, the Roman god of war, the twins were considered half-divine. The new king, Amulius, feared Romulus and Remus would take back the throne, a she-wolf saved and raised them, and when they were old enough, they returned the throne of Alba Longa to Numitor. Romulus became the source of the citys name, in order to attract people to the city, Rome became a sanctuary for the indigent, exiled, and unwanted. This caused a problem for Rome, which had a large workforce but was bereft of women, Romulus traveled to the neighboring towns and tribes and attempted to secure marriage rights, but as Rome was so full of undesirables they all refused. Legend says that the Latins invited the Sabines to a festival and stole their unmarried maidens, leading to the integration of the Latins, after a long time in rough seas, they landed at the banks of the Tiber River. Not long after they landed, the men wanted to take to the sea again, one woman, named Roma, suggested that the women burn the ships out at sea to prevent them from leaving. At first, the men were angry with Roma, but they realized that they were in the ideal place to settle. They named the settlement after the woman who torched their ships, the Roman poet Virgil recounted this legend in his classical epic poem the Aeneid
10.
Venice
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Venice is a city in northeastern Italy and the capital of the Veneto region. It is situated across a group of 118 small islands that are separated by canals and these are located in the shallow Venetian Lagoon, an enclosed bay that lies between the mouths of the Po and the Piave Rivers. Parts of Venice are renowned for the beauty of their settings, their architecture, the lagoon and a part of the city are listed as a World Heritage Site. In 2014,264,579 people resided in Comune di Venezia, together with Padua and Treviso, the city is included in the Padua-Treviso-Venice Metropolitan Area, with a total population of 2.6 million. PATREVE is a metropolitan area without any degree of autonomy. The name is derived from the ancient Veneti people who inhabited the region by the 10th century BC, the city was historically the capital of the Republic of Venice. Venice has been known as the La Dominante, Serenissima, Queen of the Adriatic, City of Water, City of Masks, City of Bridges, The Floating City, and City of Canals. The City State of Venice is considered to have been the first real international financial center which gradually emerged from the 9th century to its peak in the 14th century and this made Venice a wealthy city throughout most of its history. It is also known for its several important artistic movements, especially the Renaissance period, Venice has played an important role in the history of symphonic and operatic music, and it is the birthplace of Antonio Vivaldi. Venice has been ranked the most beautiful city in the world as of 2016, the name Venetia, however, derives from the Roman name for the people known as the Veneti, and called by the Greeks Eneti. The meaning of the word is uncertain, although there are other Indo-European tribes with similar-sounding names, such as the Celtic Veneti, Baltic Veneti, and the Slavic Wends. Linguists suggest that the name is based on an Indo-European root *wen, so that *wenetoi would mean beloved, lovable, a connection with the Latin word venetus, meaning the color sea-blue, is also possible. The alternative obsolete form is Vinegia, some late Roman sources reveal the existence of fishermen on the islands in the original marshy lagoons. They were referred to as incolae lacunae, the traditional founding is identified with the dedication of the first church, that of San Giacomo on the islet of Rialto — said to have taken place at the stroke of noon on 25 March 421. Beginning as early as AD166 to 168, the Quadi and Marcomanni destroyed the center in the area. The Roman defences were again overthrown in the early 5th century by the Visigoths and, some 50 years later, New ports were built, including those at Malamocco and Torcello in the Venetian lagoon. The tribuni maiores, the earliest central standing governing committee of the islands in the Lagoon, the traditional first doge of Venice, Paolo Lucio Anafesto, was actually Exarch Paul, and his successor, Marcello Tegalliano, was Pauls magister militum. In 726 the soldiers and citizens of the Exarchate rose in a rebellion over the controversy at the urging of Pope Gregory II
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