1.
System of measurement
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A system of measurement is a collection of units of measurement and rules relating them to each other. Systems of measurement have historically been important, regulated and defined for the purposes of science and commerce, systems of measurement in modern use include the metric system, the imperial system, and United States customary units. The French Revolution gave rise to the system, and this has spread around the world. In most systems, length, mass, and time are base quantities, later science developments showed that either electric charge or electric current could be added to extend the set of base quantities by which many other metrological units could be easily defined. Other quantities, such as power and speed, are derived from the set, for example. Such arrangements were satisfactory in their own contexts, the preference for a more universal and consistent system only gradually spread with the growth of science. Changing a measurement system has substantial financial and cultural costs which must be offset against the advantages to be obtained using a more rational system. However pressure built up, including scientists and engineers for conversion to a more rational. The unifying characteristic is that there was some definition based on some standard, eventually cubits and strides gave way to customary units to met the needs of merchants and scientists. In the metric system and other recent systems, a basic unit is used for each base quantity. Often secondary units are derived from the units by multiplying by powers of ten. Thus the basic unit of length is the metre, a distance of 1.234 m is 1,234 millimetres. Metrication is complete or nearly complete in almost all countries, US customary units are heavily used in the United States and to some degree in Liberia. Traditional Burmese units of measurement are used in Burma, U. S. units are used in limited contexts in Canada due to the large volume of trade, there is also considerable use of Imperial weights and measures, despite de jure Canadian conversion to metric. In the United States, metric units are used almost universally in science, widely in the military, and partially in industry, but customary units predominate in household use. At retail stores, the liter is a used unit for volume, especially on bottles of beverages. Some other standard non-SI units are still in use, such as nautical miles and knots in aviation. Metric systems of units have evolved since the adoption of the first well-defined system in France in 1795, during this evolution the use of these systems has spread throughout the world, first to non-English-speaking countries, and then to English speaking countries
2.
Imperial units
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The system of imperial units or the imperial system is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced. The Imperial units replaced the Winchester Standards, which were in effect from 1588 to 1825, the system came into official use across the British Empire. The imperial system developed from what were first known as English units, the Weights and Measures Act of 1824 was initially scheduled to go into effect on 1 May 1825. However, the Weights and Measures Act of 1825 pushed back the date to 1 January 1826, the 1824 Act allowed the continued use of pre-imperial units provided that they were customary, widely known, and clearly marked with imperial equivalents. Apothecaries units are mentioned neither in the act of 1824 nor 1825, at the time, apothecaries weights and measures were regulated in England, Wales, and Berwick-upon-Tweed by the London College of Physicians, and in Ireland by the Dublin College of Physicians. In Scotland, apothecaries units were unofficially regulated by the Edinburgh College of Physicians, the three colleges published, at infrequent intervals, pharmacopoeiae, the London and Dublin editions having the force of law. The Medical Act of 1858 transferred to The Crown the right to publish the official pharmacopoeia and to regulate apothecaries weights, Metric equivalents in this article usually assume the latest official definition. Before this date, the most precise measurement of the imperial Standard Yard was 0.914398416 metres, in 1824, the various different gallons in use in the British Empire were replaced by the imperial gallon, a unit close in volume to the ale gallon. It was originally defined as the volume of 10 pounds of distilled water weighed in air with brass weights with the standing at 30 inches of mercury at a temperature of 62 °F. The Weights and Measures Act of 1985 switched to a gallon of exactly 4.54609 l and these measurements were in use from 1826, when the new imperial gallon was defined, but were officially abolished in the United Kingdom on 1 January 1971. In the USA, though no longer recommended, the system is still used occasionally in medicine. The troy pound was made the unit of mass by the 1824 Act, however, its use was abolished in the UK on 1 January 1879, with only the troy ounce. The Weights and Measures Act 1855 made the pound the primary unit of mass. In all the systems, the unit is the pound. For the yard, the length of a pendulum beating seconds at the latitude of Greenwich at Mean Sea Level in vacuo was defined as 39.01393 inches, the imperial system is one of many systems of English units. Although most of the units are defined in more than one system, some units were used to a much greater extent, or for different purposes. The distinctions between these systems are not drawn precisely. One such distinction is that between these systems and older British/English units/systems or newer additions, the US customary system is historically derived from the English units that were in use at the time of settlement
3.
US customary units
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United States customary units are a system of measurements commonly used in the United States. The United States customary system developed from English units which were in use in the British Empire before the US declared its independence, however, the British system of measures was overhauled in 1824 to create the imperial system, changing the definitions of some units. Therefore, while many U. S. units are similar to their Imperial counterparts. The majority of U. S. customary units were redefined in terms of the meter and these definitions were refined by the international yard and pound agreement of 1959. Americans primarily use customary units in commercial activities, as well as for personal and social use, in science, medicine, many sectors of industry and some of government, metric units are used. The International System of Units, the form of the metric system, is preferred for many uses by the U. S. National Institute of Standards. The United States system of units is similar to the British imperial system, both systems are derived from English units, a system which had evolved over the millennia before American independence, and which had its roots in Roman and Anglo-Saxon units. The customary system was championed by the U. S. -based International Institute for Preserving and Perfecting Weights, advocates of the customary system saw the French Revolutionary, or metric, system as atheistic. An auxiliary of the Institute in Ohio published a poem with wording such as down with every metric scheme and A perfect inch, one adherent of the customary system called it a just weight and a just measure, which alone are acceptable to the Lord. The U. S. government passed the Metric Conversion Act of 1975, the legislation states that the federal government has a responsibility to assist industry as it voluntarily converts to the metric system, i. e. metrification. This is most evident in U. S. labeling requirements on food products, according to the CIA Factbook, the United States is one of three nations that have not adopted the metric system as their official system of weights and measures. U. S. customary units are used on consumer products. Metric units are standard in science, medicine, as well as many sectors of industry and government, the metric system also lacks a parallel to the foot. Frequently, however, these units designate quite different sizes, for example, the mile ranged by country from one-half to five U. S. miles, foot and pound also had varying definitions. Historically, a range of non-SI units were used in the U. S. and in Britain. This article deals only with the commonly used or officially defined in the U. S. For measuring length, the U. S. customary system uses the inch, foot, yard, and mile, since July 1,1959, these have been defined on the basis of 1 yard =0.9144 meters except for some applications in surveying. The U. S. the United Kingdom and other Commonwealth countries agreed on this definition, the NAD27 was replaced in the 1980s by the North American Datum of 1983, which is defined in meters
4.
Length
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In geometric measurements, length is the most extended dimension of an object. In the International System of Quantities, length is any quantity with dimension distance, in other contexts length is the measured dimension of an object. For example, it is possible to cut a length of a wire which is shorter than wire thickness. Length may be distinguished from height, which is vertical extent, and width or breadth, length is a measure of one dimension, whereas area is a measure of two dimensions and volume is a measure of three dimensions. In most systems of measurement, the unit of length is a base unit, measurement has been important ever since humans settled from nomadic lifestyles and started using building materials, occupying land and trading with neighbours. As society has become more technologically oriented, much higher accuracies of measurement are required in a diverse set of fields. One of the oldest units of measurement used in the ancient world was the cubit which was the length of the arm from the tip of the finger to the elbow. This could then be subdivided into shorter units like the foot, hand or finger, the cubit could vary considerably due to the different sizes of people. After Albert Einsteins special relativity, length can no longer be thought of being constant in all reference frames. Thus a ruler that is one meter long in one frame of reference will not be one meter long in a frame that is travelling at a velocity relative to the first frame. This means length of an object is variable depending on the observer, in the physical sciences and engineering, when one speaks of units of length, the word length is synonymous with distance. There are several units that are used to measure length, in the International System of Units, the basic unit of length is the metre and is now defined in terms of the speed of light. The centimetre and the kilometre, derived from the metre, are commonly used units. In U. S. customary units, English or Imperial system of units, commonly used units of length are the inch, the foot, the yard, and the mile. Units used to denote distances in the vastness of space, as in astronomy, are longer than those typically used on Earth and include the astronomical unit, the light-year. Dimension Distance Orders of magnitude Reciprocal length Smoot Unit of length
5.
Foot (unit)
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The foot is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly, in both systems, the foot comprises 12 inches and three feet compose a yard. Historically the foot was a part of local systems of units, including the Greek, Roman, Chinese, French. It varied in length from country to country, from city to city and its length was usually between 250 mm and 335 mm and was generally, but not always, subdivided into 12 inches or 16 digits. The United States is the industrialized nation that uses the international foot and the survey foot in preference to the meter in its commercial, engineering. The foot is legally recognized in the United Kingdom, road signs must use imperial units, the measurement of altitude in international aviation is one of the few areas where the foot is widely used outside the English-speaking world. The length of the international foot corresponds to a foot with shoe size of 13,14,15.5 or 46. Historically the human body has been used to provide the basis for units of length. The foot of a male is typically about 15. 3% of his height, giving a person of 160 cm a foot of 245 mm. These figures are less than the used in most cities over time. Archeologists believe that the Egyptians, Ancient Indians and Mesopotamians preferred the cubit while the Romans, under the Harappan linear measures, Indus cities during the Bronze Age used a foot of 13.2 inches and a cubit of 20.8 inches. The Egyptian equivalent of the measure of four palms or 16 digits—was known as the djeser and has been reconstructed as about 30 cm. The Greek foot had a length of 1⁄600 of a stadion, one stadion being about 181.2 m, the standard Roman foot was normally about 295.7 mm, but in the provinces, the pes Drusianus was used, with a length of about 334 mm. Originally both the Greeks and the Romans subdivided the foot into 16 digits, but in later years, after the fall of the Roman Empire, some Roman traditions were continued but others fell into disuse. In AD790 Charlemagne attempted to reform the units of measure in his domains and his units of length were based on the toise and in particular the toise de lÉcritoire, the distance between the fingertips of the outstretched arms of a man. The toise has 6 pieds each of 326.6 mm, at the same time, monastic buildings used the Carolingian foot of 340 mm. The procedure for verification of the foot as described in the 16th century by Jacob Koebel in his book Geometrei, the measures of Iron Age Britain are uncertain and proposed reconstructions such as the Megalithic Yard are controversial. Later Welsh legend credited Dyfnwal Moelmud with the establishment of their units, the Belgic or North German foot of 335 mm was introduced to England either by the Belgic Celts during their invasions prior to the Romans or by the Anglo-Saxons in the 5th & 6th century
6.
Inch
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The inch is a unit of length in the imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia, inch is also used to translate related units in other measurement systems. The English word inch was a borrowing from Latin uncia not present in other Germanic languages. The vowel change from Latin /u/ to English /ɪ/ is known as umlaut, the consonant change from the Latin /k/ to English /tʃ/ or /ʃ/ is palatalisation. Both were features of Old English phonology, inch is cognate with ounce, whose separate pronunciation and spelling reflect its reborrowing in Middle English from Anglo-Norman unce and ounce. In many other European languages, the word for inch is the same as or derived from the word for thumb, the inch is a commonly used customary unit of length in the United States, Canada, and the United Kingdom. It is also used in Japan for electronic parts, especially display screens, for example, three feet two inches can be written as 3′ 2″. Paragraph LXVII sets out the fine for wounds of various depths, one inch, one shilling, an Anglo-Saxon unit of length was the barleycorn. After 1066,1 inch was equal to 3 barleycorns, which continued to be its legal definition for several centuries, similar definitions are recorded in both English and Welsh medieval law tracts. One, dating from the first half of the 10th century, is contained in the Laws of Hywel Dda which superseded those of Dyfnwal, both definitions, as recorded in Ancient Laws and Institutes of Wales, are that three lengths of a barleycorn is the inch. However, the oldest surviving manuscripts date from the early 14th century, john Bouvier similarly recorded in his 1843 law dictionary that the barleycorn was the fundamental measure. He noted that this process would not perfectly recover the standard, before the adoption of the international yard and pound, various definitions were in use. In the United Kingdom and most countries of the British Commonwealth, the United States adopted the conversion factor 1 metre =39.37 inches by an act in 1866. In 1930, the British Standards Institution adopted an inch of exactly 25.4 mm, the American Standards Association followed suit in 1933. By 1935, industry in 16 countries had adopted the industrial inch as it came to be known, in 1946, the Commonwealth Science Congress recommended a yard of exactly 0.9144 metres for adoption throughout the British Commonwealth. This was adopted by Canada in 1951, the United States on 1 July 1959, Australia in 1961, effective 1 January 1964, and the United Kingdom in 1963, effective on 1 January 1964. The new standards gave an inch of exactly 25.4 mm,1.7 millionths of a longer than the old imperial inch and 2 millionths of an inch shorter than the old US inch. The United States retains the 1/39. 37-metre definition for survey purposes and this is approximately 1/8-inch in a mile
7.
Metric system
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The metric system is an internationally agreed decimal system of measurement. Many sources also cite Liberia and Myanmar as the other countries not to have done so. Although the originators intended to devise a system that was accessible to all. Control of the units of measure was maintained by the French government until 1875, when it was passed to an intergovernmental organisation. From its beginning, the features of the metric system were the standard set of interrelated base units. These base units are used to larger and smaller units that could replace a huge number of other units of measure in existence. Although the system was first developed for use, the development of coherent units of measure made it particularly suitable for science. Although the metric system has changed and developed since its inception, designed for transnational use, it consisted of a basic set of units of measurement, now known as base units. At the outbreak of the French Revolution in 1789, most countries, the metric system was designed to be universal—in the words of the French philosopher Marquis de Condorcet it was to be for all people for all time. However, these overtures failed and the custody of the metric system remained in the hands of the French government until 1875. In languages where the distinction is made, unit names are common nouns, the concept of using consistent classical names for the prefixes was first proposed in a report by the Commission on Weights and Measures in May 1793. The prefix kilo, for example, is used to multiply the unit by 1000, thus the kilogram and kilometre are a thousand grams and metres respectively, and a milligram and millimetre are one thousandth of a gram and metre respectively. These relations can be written symbolically as,1 mg =0, however,1935 extensions to the prefix system did not follow this convention, the prefixes nano- and micro-, for example have Greek roots. During the 19th century the prefix myria-, derived from the Greek word μύριοι, was used as a multiplier for 10000, prefixes are not usually used to indicate multiples of a second greater than 1, the non-SI units of minute, hour and day are used instead. On the other hand, prefixes are used for multiples of the unit of volume. The base units used in the system must be realisable. Each of the units in SI is accompanied by a mise en pratique published by the BIPM that describes in detail at least one way in which the base unit can be measured. In practice, such realisation is done under the auspices of a mutual acceptance arrangement, in the original version of the metric system the base units could be derived from a specified length and the weight of a specified volume of pure water
8.
International System of Units
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The International System of Units is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units, the system also establishes a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units. The system was published in 1960 as the result of an initiative began in 1948. It is based on the system of units rather than any variant of the centimetre-gram-second system. The motivation for the development of the SI was the diversity of units that had sprung up within the CGS systems, the International System of Units has been adopted by most developed countries, however, the adoption has not been universal in all English-speaking countries. The metric system was first implemented during the French Revolution with just the metre and kilogram as standards of length, in the 1830s Carl Friedrich Gauss laid the foundations for a coherent system based on length, mass, and time. In the 1860s a group working under the auspices of the British Association for the Advancement of Science formulated the requirement for a coherent system of units with base units and derived units. Meanwhile, in 1875, the Treaty of the Metre passed responsibility for verification of the kilogram, in 1921, the Treaty was extended to include all physical quantities including electrical units originally defined in 1893. The units associated with these quantities were the metre, kilogram, second, ampere, kelvin, in 1971, a seventh base quantity, amount of substance represented by the mole, was added to the definition of SI. On 11 July 1792, the proposed the names metre, are, litre and grave for the units of length, area, capacity. The committee also proposed that multiples and submultiples of these units were to be denoted by decimal-based prefixes such as centi for a hundredth, on 10 December 1799, the law by which the metric system was to be definitively adopted in France was passed. Prior to this, the strength of the magnetic field had only been described in relative terms. The technique used by Gauss was to equate the torque induced on a magnet of known mass by the earth’s magnetic field with the torque induced on an equivalent system under gravity. The resultant calculations enabled him to assign dimensions based on mass, length, a French-inspired initiative for international cooperation in metrology led to the signing in 1875 of the Metre Convention. Initially the convention only covered standards for the metre and the kilogram, one of each was selected at random to become the International prototype metre and International prototype kilogram that replaced the mètre des Archives and kilogramme des Archives respectively. Each member state was entitled to one of each of the prototypes to serve as the national prototype for that country. Initially its prime purpose was a periodic recalibration of national prototype metres. The official language of the Metre Convention is French and the version of all official documents published by or on behalf of the CGPM is the French-language version
9.
Metre
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The metre or meter, is the base unit of length in the International System of Units. The metre is defined as the length of the path travelled by light in a vacuum in 1/299792458 seconds, the metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole. In 1799, it was redefined in terms of a metre bar. In 1960, the metre was redefined in terms of a number of wavelengths of a certain emission line of krypton-86. In 1983, the current definition was adopted, the imperial inch is defined as 0.0254 metres. One metre is about 3 3⁄8 inches longer than a yard, Metre is the standard spelling of the metric unit for length in nearly all English-speaking nations except the United States and the Philippines, which use meter. Measuring devices are spelled -meter in all variants of English, the suffix -meter has the same Greek origin as the unit of length. This range of uses is found in Latin, French, English. Thus calls for measurement and moderation. In 1668 the English cleric and philosopher John Wilkins proposed in an essay a decimal-based unit of length, as a result of the French Revolution, the French Academy of Sciences charged a commission with determining a single scale for all measures. In 1668, Wilkins proposed using Christopher Wrens suggestion of defining the metre using a pendulum with a length which produced a half-period of one second, christiaan Huygens had observed that length to be 38 Rijnland inches or 39.26 English inches. This is the equivalent of what is now known to be 997 mm, no official action was taken regarding this suggestion. In the 18th century, there were two approaches to the definition of the unit of length. One favoured Wilkins approach, to define the metre in terms of the length of a pendulum which produced a half-period of one second. The other approach was to define the metre as one ten-millionth of the length of a quadrant along the Earths meridian, that is, the distance from the Equator to the North Pole. This means that the quadrant would have defined as exactly 10000000 metres at that time. To establish a universally accepted foundation for the definition of the metre, more measurements of this meridian were needed. This portion of the meridian, assumed to be the length as the Paris meridian, was to serve as the basis for the length of the half meridian connecting the North Pole with the Equator
10.
Standard (metrology)
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In metrology, a standard is an object, system, or experiment that bears a defined relationship to a unit of measurement of a physical quantity. Standards are the reference for a system of weights and measures. Historical standards for length, volume, and mass were defined by different authorities. There is a hierarchy of physical measurement standards. At the top of the tree are the master standards - these are known as primary standards, primary standards are made to the highest metrological quality and are the definitive definition or realization of their unit of measure. Historically, units of measure were defined with reference to unique artifacts which were the legal basis of units of measure. One advantage of elimination of artifact standards is that inter-comparison of artifacts is no longer required, another advantage would be that the loss or damage of the artifact standards would not disrupt the system of measures. The next quality standard in the hierarchy is known as a secondary standard, secondary standards are calibrated with reference to a primary standard. The third level of standard, a standard which is calibrated against a secondary standard, is known as a working standard. Working standards are used for the calibration of commercial and industrial measurement equipment, an example of a primary standard is the international prototype kilogram which is the master kilogram and the primary mass standard for the International System of Units. The IPK is a one kilogram mass of a platinum-iridium alloy maintained by the International Bureau of Weights and Measures in Sèvres, another example is the unit of electrical potential, the volt. Formerly it was defined in terms of standard cell electrochemical batteries, currently the volt is defined in terms of the output of a Josephson junction, which bears a direct relationship to fundamental physical constants. In contrast, the standard for the meter is no longer defined by a physical object. In 1983, the meter was redefined as the distance light travels in a vacuum during 1/299,792,458 of a second. Secondary reference standards are very close approximations of primary reference standards, working standards and certified reference materials used in commerce and industry have a traceable relationship to the secondary and primary standards. Working standards are expected to deteriorate, and are no longer considered traceable to a standard after a time period or use count expires. National organizations provide calibration and private industrial laboratories with items, processes and/or certification so they can provide certified traceability to national standards and these laboratory standards are kept in controlled conditions to maintain their precision, and used as a reference for calibration and creating working standards. Sometimes they are called secondary standards because of their high quality, history of measurement International System of Units Measurement Measurement uncertainty Measuring instrument Metre Technical standard Units of measurement Watt balance
11.
Royal Observatory, Greenwich
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The Royal Observatory, Greenwich is an observatory situated on a hill in Greenwich Park, overlooking the River Thames. It played a role in the history of astronomy and navigation. The observatory was commissioned in 1675 by King Charles II, with the stone being laid on 10 August. The site was chosen by Sir Christopher Wren and he appointed John Flamsteed as the first Astronomer Royal. The building was completed in the summer of 1676, the building was often called Flamsteed House, in reference to its first occupant. The scientific work of the observatory was relocated elsewhere in stages in the first half of the 20th century,1675 –22 June, Royal Observatory founded. 1675 –10 August, construction began,1714 Longitude Act established the Board of Longitude and Longitude rewards. The Astronomer Royal was, until the Board was dissolved in 1828,1767 Astronomer Royal Nevil Maskelyne began publication of the Nautical Almanac, based on observations made at the Observatory. 1833 Daily time signals began, marked by dropping a Time ball,1899 The New Physical Observatory was completed. 1924 Hourly time signals from the Royal Observatory were first broadcast on 5 February,1948 Office of the Astronomer Royal was moved to Herstmonceux. 1957 Royal Observatory completed its move to Herstmonceux, becoming the Royal Greenwich Observatory, the Greenwich site is renamed the Old Royal Observatory. Greenwich site is returned to its name, the Royal Observatory. The Ordnance Office was given responsibility for building the Observatory, with Moore providing the key instruments, Moore donated two clocks, built by Thomas Tompion, which were installed in the 20 foot high Octagon Room, the principal room of the building. They were of unusual design, each with a pendulum 13 feet in length mounted above the face, giving a period of four seconds. British astronomers have used the Royal Observatory as a basis for measurement. Four separate meridians have passed through the buildings, defined by successive instruments, subsequently, nations across the world used it as their standard for mapping and timekeeping. When the Airy circle became the reference for the meridian, the difference resulting from the change was considered enough to be neglected. When a new triangulation was done between 1936 and 1962, scientists determined that in the Ordnance Survey system the longitude of the international Greenwich meridian was not 0° and this old astronomical prime meridian has been replaced by a more precise prime meridian
12.
Greenwich, England
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Greenwich is an early-established district of todays London, England, centred 5.5 miles east south-east of Charing Cross. The town lends its name to the Royal Borough of Greenwich, Greenwich is generally described as being part of South-east London and sometimes as being part of East London. Greenwich is notable for its history and for giving its name to the Greenwich Meridian. The town became the site of a palace, the Palace of Placentia from the 15th century. The palace fell into disrepair during the English Civil War and was rebuilt as the Royal Naval Hospital for Sailors by Sir Christopher Wren and his assistant Nicholas Hawksmoor. These buildings became the Royal Naval College in 1873, and they remained an establishment for military education until 1998 when they passed into the hands of the Greenwich Foundation. The historic rooms within these buildings remain open to the public, other buildings are used by University of Greenwich and Trinity Laban Conservatoire of Music and Dance. The town became a resort in the 18th century and many grand houses were built there, such as Vanbrugh Castle established on Maze Hill. From the Georgian period estates of houses were constructed above the town centre, Greenwich formed part of Kent until 1889 when the County of London was created. The place-name Greenwich is first attested in a Saxon charter of 918 and it is recorded as Grenewic in 964, and as Grenawic in the Anglo-Saxon Chronicle for 1013. It is Grenviz in the Domesday Book of 1086, and Grenewych in the Taxatio Ecclesiastica of 1291, the name means green wic or settlement. An article in The Times of 13 October 1967 stated, East Greenwich, gateway to the Blackwall Tunnel, remains solidly working class, the manpower for one eighth of Londons heavy industry. West Greenwich is a hybrid, the spirit of Nelson, the Cutty Sark, the Maritime Museum, an industrial waterfront and a number of elegant houses, ripe for development. Royal charters granted to English colonists in North America, often used the name of the manor of East Greenwich for describing the tenure as that of free socage, New England charters provided that the grantees should hold their lands as of his Majesty’s manor of East Greenwich. Grants named the castle of Windsor, places in North America that have taken the name East Greenwich include a township in Gloucester County, New Jersey, a hamlet in Washington County, New York, and a town in Kent County, Rhode Island. Tumuli to the south-west of Flamsteed House, in Greenwich Park, are thought to be early Bronze Age barrows re-used by the Saxons in the 6th century as burial grounds, to the east between the Vanbrugh and Maze Hill Gates is the site of a Roman villa or temple. A small area of red paving tesserae protected by railings marks the spot and it was excavated in 1902 and 300 coins were found dating from the emperors Claudius and Honorius to the 5th century. This was excavated by the Channel 4 television programme Time Team in 1999, broadcast in 2000, the Roman road from London to Dover, Watling Street crossed the high ground to the south of Greenwich, through Blackheath
13.
London
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London /ˈlʌndən/ is the capital and most populous city of England and the United Kingdom. Standing on the River Thames in the south east of the island of Great Britain and it was founded by the Romans, who named it Londinium. Londons ancient core, the City of London, largely retains its 1. 12-square-mile medieval boundaries. London is a global city in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism. It is crowned as the worlds largest financial centre and has the fifth- or sixth-largest metropolitan area GDP in the world, London is a world cultural capital. It is the worlds most-visited city as measured by international arrivals and has the worlds largest city airport system measured by passenger traffic, London is the worlds leading investment destination, hosting more international retailers and ultra high-net-worth individuals than any other city. Londons universities form the largest concentration of education institutes in Europe. In 2012, London became the first city to have hosted the modern Summer Olympic Games three times, London has a diverse range of people and cultures, and more than 300 languages are spoken in the region. Its estimated mid-2015 municipal population was 8,673,713, the largest of any city in the European Union, Londons urban area is the second most populous in the EU, after Paris, with 9,787,426 inhabitants at the 2011 census. The citys metropolitan area is the most populous in the EU with 13,879,757 inhabitants, the city-region therefore has a similar land area and population to that of the New York metropolitan area. London was the worlds most populous city from around 1831 to 1925, Other famous landmarks include Buckingham Palace, the London Eye, Piccadilly Circus, St Pauls Cathedral, Tower Bridge, Trafalgar Square, and The Shard. The London Underground is the oldest underground railway network in the world, the etymology of London is uncertain. It is an ancient name, found in sources from the 2nd century and it is recorded c.121 as Londinium, which points to Romano-British origin, and hand-written Roman tablets recovered in the city originating from AD 65/70-80 include the word Londinio. The earliest attempted explanation, now disregarded, is attributed to Geoffrey of Monmouth in Historia Regum Britanniae and this had it that the name originated from a supposed King Lud, who had allegedly taken over the city and named it Kaerlud. From 1898, it was accepted that the name was of Celtic origin and meant place belonging to a man called *Londinos. The ultimate difficulty lies in reconciling the Latin form Londinium with the modern Welsh Llundain, which should demand a form *lōndinion, from earlier *loundiniom. The possibility cannot be ruled out that the Welsh name was borrowed back in from English at a later date, and thus cannot be used as a basis from which to reconstruct the original name. Until 1889, the name London officially applied only to the City of London, two recent discoveries indicate probable very early settlements near the Thames in the London area
14.
Fahrenheit
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Fahrenheit is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit, after whom the scale is named. It uses the degree Fahrenheit as the unit, several accounts of how he originally defined his scale exist. The lower defining point,0 °F, was established as the temperature of a solution of brine made from parts of ice. Further limits were established as the point of ice and his best estimate of the average human body temperature. All other countries in the world now use the Celsius scale, defined since 1954 by absolute zero being −273.15 °C, on the Fahrenheit scale, the freezing point of water is 32 degrees Fahrenheit and the boiling point is 212 °F. This puts the boiling and freezing points of water exactly 180 degrees apart, therefore, a degree on the Fahrenheit scale is 1⁄180 of the interval between the freezing point and the boiling point. On the Celsius scale, the freezing and boiling points of water are 100 degrees apart, a temperature interval of 1 °F is equal to an interval of 5⁄9 degrees Celsius. The Fahrenheit and Celsius scales intersect at −40°, absolute zero is −273.15 °C or −459.67 °F. For an exact conversion, the formulas can be applied. Again, f is the value in Fahrenheit and c the value in Celsius, f °Fahrenheit to c °Celsius, C °Celsius to f °Fahrenheit, −40 = f. Fahrenheit proposed his temperature scale in 1724, basing it on two points of temperature. In his initial scale, the point is determined by placing the thermometer in a mixture of ice, water. This is a mixture which stabilizes its temperature automatically, that stable temperature was defined as 0 °F. The second point,96 degrees, was approximately the human bodys temperature, in any case, the definition of the Fahrenheit scale has changed since. According to a letter Fahrenheit wrote to his friend Herman Boerhaave, his scale was built on the work of Ole Rømer, whom he had met earlier. In Rømers scale, brine freezes at zero, water freezes and melts at 7.5 degrees, body temperature is 22.5, Fahrenheit multiplied each value by four in order to eliminate fractions and increase the granularity of the scale. Fahrenheit observed that water boils at about 212 degrees using this scale, under this system, the Fahrenheit scale is redefined slightly so that the freezing point of water is exactly 32 °F, and the boiling point is exactly 212 °F or 180 degrees higher. It is for this reason that human body temperature is approximately 98° on the revised scale
15.
Celsius
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Celsius, also known as centigrade, is a metric scale and unit of measurement for temperature. As an SI derived unit, it is used by most countries in the world and it is named after the Swedish astronomer Anders Celsius, who developed a similar temperature scale. The degree Celsius can refer to a temperature on the Celsius scale as well as a unit to indicate a temperature interval. Before being renamed to honour Anders Celsius in 1948, the unit was called centigrade, from the Latin centum, which means 100, and gradus, which means steps. The scale is based on 0° for the point of water. This scale is widely taught in schools today, by international agreement the unit degree Celsius and the Celsius scale are currently defined by two different temperatures, absolute zero, and the triple point of VSMOW. This definition also precisely relates the Celsius scale to the Kelvin scale, absolute zero, the lowest temperature possible, is defined as being precisely 0 K and −273.15 °C. The temperature of the point of water is defined as precisely 273.16 K at 611.657 pascals pressure. This definition fixes the magnitude of both the degree Celsius and the kelvin as precisely 1 part in 273.16 of the difference between absolute zero and the point of water. Thus, it sets the magnitude of one degree Celsius and that of one kelvin as exactly the same, additionally, it establishes the difference between the two scales null points as being precisely 273.15 degrees. In his paper Observations of two persistent degrees on a thermometer, he recounted his experiments showing that the point of ice is essentially unaffected by pressure. He also determined with precision how the boiling point of water varied as a function of atmospheric pressure. He proposed that the point of his temperature scale, being the boiling point. This pressure is known as one standard atmosphere, the BIPMs 10th General Conference on Weights and Measures later defined one standard atmosphere to equal precisely 1013250dynes per square centimetre. On 19 May 1743 he published the design of a mercury thermometer, in 1744, coincident with the death of Anders Celsius, the Swedish botanist Carolus Linnaeus reversed Celsiuss scale. In it, Linnaeus recounted the temperatures inside the orangery at the University of Uppsala Botanical Garden, since the 19th century, the scientific and thermometry communities worldwide referred to this scale as the centigrade scale. Temperatures on the scale were often reported simply as degrees or. More properly, what was defined as centigrade then would now be hectograde.2 gradians, for scientific use, Celsius is the term usually used, with centigrade otherwise continuing to be in common but decreasing use, especially in informal contexts in English-speaking countries
16.
United States
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Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography, climate and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power. The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations. In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
17.
United States Department of the Treasury
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The Department of the Treasury is an executive department and the treasury of the United States federal government. It was established by an Act of Congress in 1789 to manage government revenue, the Department is administered by the Secretary of the Treasury, who is a member of the Cabinet. On February 13,2017, the Senate confirmed Steven Mnuchin as Secretary of the Treasury, the first Secretary of the Treasury was Alexander Hamilton, who was sworn into office on September 11,1789. Hamilton was asked by President George Washington to serve after first having asked Robert Morris, Hamilton almost single-handedly worked out the nations early financial system, and for several years was a major presence in Washingtons administration as well. His portrait is on the obverse of the U. S. ten-dollar bill while the Treasury Department building is shown on the reverse. Besides the Secretary, one of the best-known Treasury officials is the Treasurer of the United States whose signature, along with the Treasury Secretarys, the Treasury prints and mints all paper currency and coins in circulation through the Bureau of Engraving and Printing and the United States Mint. The Department also collects all federal taxes through the Internal Revenue Service, the Congress had no power to levy and collect taxes, nor was there a tangible basis for securing funds from foreign investors or governments. The delegates resolved to issue paper money in the form of bills of credit, the Congress stipulated that each of the colonies contribute to the Continental governments funds. With the signing of the Declaration of Independence on July 4,1776, despite the infusion of foreign and domestic loans to pay for a war of independence, the United Colonies were unable to establish a well-organized agency for financial administration. Michael Hillegas was first called Treasurer of the United States on May 14,1777, the Treasury Office was reorganized three times between 1778 and 1781. The $241.5 million of paper Continental Dollars devalued rapidly, by May 1781, the dollar collapsed at a rate of from 500 to 1000 to 1 against hard currency. Protests against the worthless money swept the colonies and angry Americans coined the expression not worth a Continental, Robert Morris was designated Superintendent of Finance in 1781 and restored stability to the nations finances. Morris, a colonial merchant, was nicknamed the Financier because of his reputation for procuring funds or goods on a moments notice. His staff included a Comptroller, a Treasurer, a Register, and auditors, who managed the finances through 1784. The Treasury Board of three Commissioners continued to oversee the finances of the confederation of former colonies until September 1789, the First Congress of the United States was called to convene in New York on March 4,1789, marking the beginning of government under the Constitution. Alexander Hamilton took the oath of office as the first Secretary of the Treasury on September 11,1789, Hamilton had served as George Washingtons aide-de-camp during the Revolution, and was of great importance in the ratification of the Constitution. Because of his financial and managerial acumen, Hamilton was a choice for solving the problem of the new nations heavy war debt. Hamiltons first official act was to submit a report to Congress in which he laid the foundation for the financial health
18.
Parliament of the United Kingdom
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It alone possesses legislative supremacy and thereby ultimate power over all other political bodies in the UK and its territories. Its head is the Sovereign of the United Kingdom and its seat is the Palace of Westminster in the City of Westminster, one of the boroughs of the British capital, the parliament is bicameral, consisting of an upper house and a lower house. The Sovereign forms the third component of the legislature, prior to the opening of the Supreme Court in October 2009, the House of Lords also performed a judicial role through the Law Lords. The House of Commons is an elected chamber with elections held at least every five years. The two Houses meet in separate chambers in the Palace of Westminster in London, most cabinet ministers are from the Commons, whilst junior ministers can be from either House. The Parliament of Great Britain was formed in 1707 following the ratification of the Treaty of Union by Acts of Union passed by the Parliament of England and the Parliament of Scotland. The UK parliament and its institutions have set the pattern for many throughout the world. However, John Bright – who coined the epithet – used it with reference to a rather than a parliament. In theory, the UKs supreme legislative power is vested in the Crown-in-Parliament. However, the Crown normally acts on the advice of the Prime Minister, the United Kingdom of Great Britain and Ireland was created in 1801, by the merger of the Kingdoms of Great Britain and Ireland under the Acts of Union. The principle of responsibility to the lower House did not develop until the 19th century—the House of Lords was superior to the House of Commons both in theory and in practice. Members of the House of Commons were elected in an electoral system. Thus, the borough of Old Sarum, with seven voters, many small constituencies, known as pocket or rotten boroughs, were controlled by members of the House of Lords, who could ensure the election of their relatives or supporters. During the reforms of the 19th century, beginning with the Reform Act 1832, No longer dependent on the Lords for their seats, MPs grew more assertive. The supremacy of the British House of Commons was established in the early 20th century, in 1909, the Commons passed the so-called Peoples Budget, which made numerous changes to the taxation system which were detrimental to wealthy landowners. The House of Lords, which consisted mostly of powerful landowners, on the basis of the Budgets popularity and the Lords consequent unpopularity, the Liberal Party narrowly won two general elections in 1910. Using the result as a mandate, the Liberal Prime Minister, Herbert Henry Asquith, introduced the Parliament Bill, in the face of such a threat, the House of Lords narrowly passed the bill. However, regardless of the Parliament Acts of 1911 and 1949, the Government of Ireland Act 1920 created the parliaments of Northern Ireland and Southern Ireland and reduced the representation of both parts at Westminster
19.
Gold
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Gold is a chemical element with symbol Au and atomic number 79. In its purest form, it is a bright, slightly yellow, dense, soft, malleable. Chemically, gold is a metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions, Gold often occurs in free elemental form, as nuggets or grains, in rocks, in veins, and in alluvial deposits. It occurs in a solid solution series with the element silver and also naturally alloyed with copper. Less commonly, it occurs in minerals as gold compounds, often with tellurium, golds atomic number of 79 makes it one of the higher numbered, naturally occurring elements. It is thought to have produced in supernova nucleosynthesis, from the collision of neutron stars. Because the Earth was molten when it was formed, almost all of the present in the early Earth probably sank into the planetary core. Gold is resistant to most acids, though it does dissolve in aqua regia, a mixture of acid and hydrochloric acid. Gold also dissolves in solutions of cyanide, which are used in mining and electroplating. Gold dissolves in mercury, forming amalgam alloys, but this is not a chemical reaction, as a precious metal, gold has been used for coinage, jewelry, and other arts throughout recorded history. A total of 186,700 tonnes of gold is in existence above ground, the world consumption of new gold produced is about 50% in jewelry, 40% in investments, and 10% in industry. Gold is also used in infrared shielding, colored-glass production, gold leafing, certain gold salts are still used as anti-inflammatories in medicine. As of 2014, the worlds largest gold producer by far was China with 450 tonnes, Gold is cognate with similar words in many Germanic languages, deriving via Proto-Germanic *gulþą from Proto-Indo-European *ǵʰelh₃-. The symbol Au is from the Latin, aurum, the Latin word for gold, the Proto-Indo-European ancestor of aurum was *h₂é-h₂us-o-, meaning glow. This word is derived from the root as *h₂éu̯sōs, the ancestor of the Latin word Aurora. This etymological relationship is presumably behind the frequent claim in scientific publications that aurum meant shining dawn, Gold is the most malleable of all metals, a single gram can be beaten into a sheet of 1 square meter, and an avoirdupois ounce into 300 square feet. Gold leaf can be thin enough to become semi-transparent
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English units
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English units are the historical units of measurement used in England up to 1826, which evolved as a combination of the Anglo-Saxon and Roman systems of units. Various standards have applied to English units at different times, in different places, the units were replaced by Imperial Units in 1824 by a Weights and Measures Act, which retained many but not all of the unit names and redefined many of the definitions. Very little is known of the measurement units of the British Isles prior to Roman colonization in the 1st century CE, during the Roman period, Roman Britain relied on Ancient Roman units of measurement. During the Anglo-Saxon period, the North German foot of 335 millimetres was the basis for other units of linear measurement. The foot was divided into 4 palms or 12 thumbs, a cubit was 2 feet, an elne 4 feet. The rod was 15 Anglo-Saxon feet, the furlong 10 rods, an acre was 4 ×40 rods, i. e.160 square rods or 36,000 square Anglo-Saxon feet. From the time of Offa King of Mercia until 1526 the Saxon pound, the Compositio retained the Anglo-Saxon rod of 5.03 metres and the acre of 4 ×40 rods. However, it redefined the yard, foot, inch, thus, the rod went from 5 old yards to 5 1⁄2 new yards, or 15 old feet to 16 1⁄2 new feet. The furlong went from 600 old feet to 660 new feet, the acre went from 36,000 old square feet to 43,560 new square feet. Scholars have speculated that the Compositio may have represented a compromise between two systems of the units, the Anglo-Saxon and the Roman. Contrary to popular belief, the Norman conquest of England had little effect on British weights and measures other than to one new unit. William the Conqueror, in one of his first legislative acts, confirmed existing Anglo-Saxon measurement, another popular myth is that the Magna Carta of 1215 had any significant effect on English weights and measures, as this document only mentions one unit but does not define it. Later development of the English system continued by defining the units by law, Standards were renewed in 1496,1588 and 1758. The English system then spread to parts of the British Empire. 17065 &6 Anne c27 Wine gallon to be a vessel with an even bottom 7 diameter throughout and 6 deep from top to bottom of the inside, or holding 231 in³. 17066 Anne c11 Act of Union decreed, the weights,171312 Anne c17 The legal coal bushel to be round with a plain and even bottom,19 1/2 from outside to outside and to hold 1 Winchester bushel and 1 quart of water. 17185 Geo I c18 Decreed Scots Pint exactly 103 in³,18256 Geo IV c12 Delayed introduction of Imperial weights and measures from 1 May 1825 to 1 January 1826. 185316 &17 Vict c29 Permitted the use of decimal Bullion weights,186629 &30 Vict c82 Standards of Weights, Measures and Coinage Act, transferred all duties and standards from the Exchequer to the newly created Standards Department of the Board of Trade
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Unit of length
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A Unit of length refers to any discrete, pre-established length or distance having a constant magnitude which is used as a reference or convention to express linear dimension. The most common units in use are U. S. customary units in the United States. British Imperial units are used for some purposes in the United Kingdom. The metric system is sub-divided into SI and non-SI units, the base unit in the International System of Units is the metre, defined as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. It is approximately equal to 1.0936 yards, other units are derived from the metre by adding prefixes from the table below, For example, a kilometre is 1000 metres. In the Centimetre–gram–second system of units, the unit of length is the centimetre. Other non-SI units are derived from decimal multiples of the metre, the basic unit of length in the Imperial and U. S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. Common Imperial units and U. S. astronomical unit AU, approximately the distance between the Earth and Sun. Light-year ly ≈9460730472580.8 km The distance that light travels in a vacuum in one Julian year and this is often a characteristic radius or wavelength of a particle. A Measure of All Things, The Story of Man and Measurement
22.
United States customary units
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United States customary units are a system of measurements commonly used in the United States. The United States customary system developed from English units which were in use in the British Empire before the US declared its independence, however, the British system of measures was overhauled in 1824 to create the imperial system, changing the definitions of some units. Therefore, while many U. S. units are similar to their Imperial counterparts. The majority of U. S. customary units were redefined in terms of the meter and these definitions were refined by the international yard and pound agreement of 1959. Americans primarily use customary units in commercial activities, as well as for personal and social use, in science, medicine, many sectors of industry and some of government, metric units are used. The International System of Units, the form of the metric system, is preferred for many uses by the U. S. National Institute of Standards. The United States system of units is similar to the British imperial system, both systems are derived from English units, a system which had evolved over the millennia before American independence, and which had its roots in Roman and Anglo-Saxon units. The customary system was championed by the U. S. -based International Institute for Preserving and Perfecting Weights, advocates of the customary system saw the French Revolutionary, or metric, system as atheistic. An auxiliary of the Institute in Ohio published a poem with wording such as down with every metric scheme and A perfect inch, one adherent of the customary system called it a just weight and a just measure, which alone are acceptable to the Lord. The U. S. government passed the Metric Conversion Act of 1975, the legislation states that the federal government has a responsibility to assist industry as it voluntarily converts to the metric system, i. e. metrification. This is most evident in U. S. labeling requirements on food products, according to the CIA Factbook, the United States is one of three nations that have not adopted the metric system as their official system of weights and measures. U. S. customary units are used on consumer products. Metric units are standard in science, medicine, as well as many sectors of industry and government, the metric system also lacks a parallel to the foot. Frequently, however, these units designate quite different sizes, for example, the mile ranged by country from one-half to five U. S. miles, foot and pound also had varying definitions. Historically, a range of non-SI units were used in the U. S. and in Britain. This article deals only with the commonly used or officially defined in the U. S. For measuring length, the U. S. customary system uses the inch, foot, yard, and mile, since July 1,1959, these have been defined on the basis of 1 yard =0.9144 meters except for some applications in surveying. The U. S. the United Kingdom and other Commonwealth countries agreed on this definition, the NAD27 was replaced in the 1980s by the North American Datum of 1983, which is defined in meters
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Yardstick
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A yardstick is a straightedge used to physically measure lengths of up to a yard high. Yardsticks are flat wooden boards with markings at regular intervals, yardsticks are often thin and rectangular, and made of wood or metal. Metal ones are often backed with a material, such as cork. Sometimes the imperial units are not included, metric only carpenters rulers are however common. Typical applications of yardsticks are for building furniture, vehicles and houses, modern carpenters yardsticks are usually made to be folded for ease of transport. Yardsticks may be used as pointing devices for posters and projections, yardsticks are also used as spars to make wings for Remote Controlled model aircraft that are made from corrugated plastic
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Prototype (metrology)
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A prototype is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from. It is a used in a variety of contexts, including semantics, design, electronics. A prototype is used to evaluate a new design to enhance precision by system analysts. Prototyping serves to provide specifications for a real, working system rather than a theoretical one, in some design workflow models, creating a prototype is the step between the formalization and the evaluation of an idea. The word prototype derives from the Greek πρωτότυπον prototypon, primitive form, neutral of πρωτότυπος prototypos, original, primitive, from πρῶτος protos, first and τύπος typos, a Working Prototype represents all or nearly all of the functionality of the final product. A Visual Prototype represents the size and appearance, but not the functionality, a User Experience Prototype represents enough of the appearance and function of the product that it can be used for user research. A Functional Prototype captures both function and appearance of the design, though it may be created with different techniques. A Paper Prototype is a printed or hand-drawn representation of the interface of a software product. In some cases, the final production materials may still be undergoing development themselves, process - Mass-production processes are often unsuitable for making a small number of parts, so prototypes may be made using different fabrication processes than the final product. Differences in fabrication process may lead to differences in the appearance of the prototype as compared to the final product, verification - The final product may be subject to a number of quality assurance tests to verify conformance with drawings or specifications. These tests may involve custom inspection fixtures, statistical sampling methods, prototypes are generally made with much closer individual inspection and the assumption that some adjustment or rework will be part of the fabrication process. Prototypes may also be exempted from some requirements that apply to the final product. Engineers and prototype specialists will attempt to minimize the impact of these differences on the role for the prototype. Engineers and prototyping specialists seek to understand the limitations of prototypes to exactly simulate the characteristics of their intended design and it is important to realize that by their very definition, prototypes will represent some compromise from the final production design. Due to differences in materials, processes and design fidelity, it is possible that a prototype may fail to perform acceptably whereas the design may have been sound. In general, it can be expected that individual prototype costs will be greater than the final production costs due to inefficiencies in materials. Prototypes are also used to revise the design for the purposes of reducing costs through optimization and it is possible to use prototype testing to reduce the risk that a design may not perform as intended, however prototypes generally cannot eliminate all risk. As an alternative, rapid prototyping or rapid application development techniques are used for the prototypes, which implement part
25.
United Kingdom
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The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, the United Kingdom includes the island of Great Britain, Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign state—the Republic of Ireland. The Irish Sea lies between Great Britain and Ireland, with an area of 242,500 square kilometres, the United Kingdom is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants, together, this makes it the fourth-most densely populated country in the European Union. The United Kingdom is a monarchy with a parliamentary system of governance. The monarch is Queen Elizabeth II, who has reigned since 6 February 1952, other major urban areas in the United Kingdom include the regions of Birmingham, Leeds, Glasgow, Liverpool and Manchester. The United Kingdom consists of four countries—England, Scotland, Wales, the last three have devolved administrations, each with varying powers, based in their capitals, Edinburgh, Cardiff and Belfast, respectively. The relationships among the countries of the UK have changed over time, Wales was annexed by the Kingdom of England under the Laws in Wales Acts 1535 and 1542. A treaty between England and Scotland resulted in 1707 in a unified Kingdom of Great Britain, which merged in 1801 with the Kingdom of Ireland to form the United Kingdom of Great Britain and Ireland. Five-sixths of Ireland seceded from the UK in 1922, leaving the present formulation of the United Kingdom of Great Britain, there are fourteen British Overseas Territories. These are the remnants of the British Empire which, at its height in the 1920s, British influence can be observed in the language, culture and legal systems of many of its former colonies. The United Kingdom is a country and has the worlds fifth-largest economy by nominal GDP. The UK is considered to have an economy and is categorised as very high in the Human Development Index. It was the worlds first industrialised country and the worlds foremost power during the 19th, the UK remains a great power with considerable economic, cultural, military, scientific and political influence internationally. It is a nuclear weapons state and its military expenditure ranks fourth or fifth in the world. The UK has been a permanent member of the United Nations Security Council since its first session in 1946 and it has been a leading member state of the EU and its predecessor, the European Economic Community, since 1973. However, on 23 June 2016, a referendum on the UKs membership of the EU resulted in a decision to leave. The Acts of Union 1800 united the Kingdom of Great Britain, Scotland, Wales and Northern Ireland have devolved self-government
26.
Australia
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Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It is the worlds sixth-largest country by total area, the neighbouring countries are Papua New Guinea, Indonesia and East Timor to the north, the Solomon Islands and Vanuatu to the north-east, and New Zealand to the south-east. Australias capital is Canberra, and its largest urban area is Sydney, for about 50,000 years before the first British settlement in the late 18th century, Australia was inhabited by indigenous Australians, who spoke languages classifiable into roughly 250 groups. The population grew steadily in subsequent decades, and by the 1850s most of the continent had been explored, on 1 January 1901, the six colonies federated, forming the Commonwealth of Australia. Australia has since maintained a liberal democratic political system that functions as a federal parliamentary constitutional monarchy comprising six states. The population of 24 million is highly urbanised and heavily concentrated on the eastern seaboard, Australia has the worlds 13th-largest economy and ninth-highest per capita income. With the second-highest human development index globally, the country highly in quality of life, health, education, economic freedom. The name Australia is derived from the Latin Terra Australis a name used for putative lands in the southern hemisphere since ancient times, the Dutch adjectival form Australische was used in a Dutch book in Batavia in 1638, to refer to the newly discovered lands to the south. On 12 December 1817, Macquarie recommended to the Colonial Office that it be formally adopted, in 1824, the Admiralty agreed that the continent should be known officially as Australia. The first official published use of the term Australia came with the 1830 publication of The Australia Directory and these first inhabitants may have been ancestors of modern Indigenous Australians. The Torres Strait Islanders, ethnically Melanesian, were originally horticulturists, the northern coasts and waters of Australia were visited sporadically by fishermen from Maritime Southeast Asia. The first recorded European sighting of the Australian mainland, and the first recorded European landfall on the Australian continent, are attributed to the Dutch. The first ship and crew to chart the Australian coast and meet with Aboriginal people was the Duyfken captained by Dutch navigator, Willem Janszoon. He sighted the coast of Cape York Peninsula in early 1606, the Dutch charted the whole of the western and northern coastlines and named the island continent New Holland during the 17th century, but made no attempt at settlement. William Dampier, an English explorer and privateer, landed on the north-west coast of New Holland in 1688, in 1770, James Cook sailed along and mapped the east coast, which he named New South Wales and claimed for Great Britain. The first settlement led to the foundation of Sydney, and the exploration, a British settlement was established in Van Diemens Land, now known as Tasmania, in 1803, and it became a separate colony in 1825. The United Kingdom formally claimed the part of Western Australia in 1828. Separate colonies were carved from parts of New South Wales, South Australia in 1836, Victoria in 1851, the Northern Territory was founded in 1911 when it was excised from South Australia
27.
New Zealand
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New Zealand /njuːˈziːlənd/ is an island nation in the southwestern Pacific Ocean. The country geographically comprises two main landmasses—the North Island, or Te Ika-a-Māui, and the South Island, or Te Waipounamu—and around 600 smaller islands. New Zealand is situated some 1,500 kilometres east of Australia across the Tasman Sea and roughly 1,000 kilometres south of the Pacific island areas of New Caledonia, Fiji, because of its remoteness, it was one of the last lands to be settled by humans. During its long period of isolation, New Zealand developed a distinct biodiversity of animal, fungal, the countrys varied topography and its sharp mountain peaks, such as the Southern Alps, owe much to the tectonic uplift of land and volcanic eruptions. New Zealands capital city is Wellington, while its most populous city is Auckland, sometime between 1250 and 1300 CE, Polynesians settled in the islands that later were named New Zealand and developed a distinctive Māori culture. In 1642, Dutch explorer Abel Tasman became the first European to sight New Zealand, in 1840, representatives of Britain and Māori chiefs signed the Treaty of Waitangi, which declared British sovereignty over the islands. In 1841, New Zealand became a colony within the British Empire, today, the majority of New Zealands population of 4.7 million is of European descent, the indigenous Māori are the largest minority, followed by Asians and Pacific Islanders. Reflecting this, New Zealands culture is derived from Māori and early British settlers. The official languages are English, Māori and New Zealand Sign Language, New Zealand is a developed country and ranks highly in international comparisons of national performance, such as health, education, economic freedom and quality of life. Since the 1980s, New Zealand has transformed from an agrarian, Queen Elizabeth II is the countrys head of state and is represented by a governor-general. In addition, New Zealand is organised into 11 regional councils and 67 territorial authorities for local government purposes, the Realm of New Zealand also includes Tokelau, the Cook Islands and Niue, and the Ross Dependency, which is New Zealands territorial claim in Antarctica. New Zealand is a member of the United Nations, Commonwealth of Nations, ANZUS, Organisation for Economic Co-operation and Development, Pacific Islands Forum, and Asia-Pacific Economic Cooperation. Dutch explorer Abel Tasman sighted New Zealand in 1642 and called it Staten Landt, in 1645, Dutch cartographers renamed the land Nova Zeelandia after the Dutch province of Zeeland. British explorer James Cook subsequently anglicised the name to New Zealand, Aotearoa is the current Māori name for New Zealand. It is unknown whether Māori had a name for the country before the arrival of Europeans. Māori had several names for the two main islands, including Te Ika-a-Māui for the North Island and Te Waipounamu or Te Waka o Aoraki for the South Island. Early European maps labelled the islands North, Middle and South, in 1830, maps began to use North and South to distinguish the two largest islands and by 1907, this was the accepted norm. The New Zealand Geographic Board discovered in 2009 that the names of the North Island and South Island had never been formalised and this set the names as North Island or Te Ika-a-Māui, and South Island or Te Waipounamu
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South Africa
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South Africa, officially the Republic of South Africa, is the southernmost country in Africa. South Africa is the 25th-largest country in the world by land area and it is the southernmost country on the mainland of the Old World or the Eastern Hemisphere. About 80 percent of South Africans are of Sub-Saharan African ancestry, divided among a variety of ethnic groups speaking different Bantu languages, the remaining population consists of Africas largest communities of European, Asian, and multiracial ancestry. South Africa is a multiethnic society encompassing a variety of cultures, languages. Its pluralistic makeup is reflected in the recognition of 11 official languages. The country is one of the few in Africa never to have had a coup détat, however, the vast majority of black South Africans were not enfranchised until 1994. During the 20th century, the black majority sought to recover its rights from the dominant white minority, with this struggle playing a role in the countrys recent history. The National Party imposed apartheid in 1948, institutionalising previous racial segregation, since 1994, all ethnic and linguistic groups have held political representation in the countrys democracy, which comprises a parliamentary republic and nine provinces. South Africa is often referred to as the Rainbow Nation to describe the multicultural diversity. The World Bank classifies South Africa as an economy. Its economy is the second-largest in Africa, and the 34th-largest in the world, in terms of purchasing power parity, South Africa has the seventh-highest per capita income in Africa. However, poverty and inequality remain widespread, with about a quarter of the population unemployed, nevertheless, South Africa has been identified as a middle power in international affairs, and maintains significant regional influence. The name South Africa is derived from the geographic location at the southern tip of Africa. Upon formation the country was named the Union of South Africa in English, since 1961 the long form name in English has been the Republic of South Africa. In Dutch the country was named Republiek van Zuid-Afrika, replaced in 1983 by the Afrikaans Republiek van Suid-Afrika, since 1994 the Republic has had an official name in each of its 11 official languages. Mzansi, derived from the Xhosa noun umzantsi meaning south, is a name for South Africa. South Africa contains some of the oldest archaeological and human fossil sites in the world, extensive fossil remains have been recovered from a series of caves in Gauteng Province. The area is a UNESCO World Heritage site and has termed the Cradle of Humankind
29.
Canada
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Canada is a country in the northern half of North America. Canadas border with the United States is the worlds longest binational land border, the majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its territory being dominated by forest and tundra. It is highly urbanized with 82 per cent of the 35.15 million people concentrated in large and medium-sized cities, One third of the population lives in the three largest cities, Toronto, Montreal and Vancouver. Its capital is Ottawa, and other urban areas include Calgary, Edmonton, Quebec City, Winnipeg. Various aboriginal peoples had inhabited what is now Canada for thousands of years prior to European colonization. Pursuant to the British North America Act, on July 1,1867, the colonies of Canada, New Brunswick and this began an accretion of provinces and territories to the mostly self-governing Dominion to the present ten provinces and three territories forming modern Canada. With the Constitution Act 1982, Canada took over authority, removing the last remaining ties of legal dependence on the Parliament of the United Kingdom. Canada is a parliamentary democracy and a constitutional monarchy, with Queen Elizabeth II being the head of state. The country is officially bilingual at the federal level and it is one of the worlds most ethnically diverse and multicultural nations, the product of large-scale immigration from many other countries. Its advanced economy is the eleventh largest in the world, relying chiefly upon its abundant natural resources, Canadas long and complex relationship with the United States has had a significant impact on its economy and culture. Canada is a country and has the tenth highest nominal per capita income globally as well as the ninth highest ranking in the Human Development Index. It ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, Canada is an influential nation in the world, primarily due to its inclusive values, years of prosperity and stability, stable economy, and efficient military. While a variety of theories have been postulated for the origins of Canada. In 1535, indigenous inhabitants of the present-day Quebec City region used the word to direct French explorer Jacques Cartier to the village of Stadacona, from the 16th to the early 18th century Canada referred to the part of New France that lay along the St. Lawrence River. In 1791, the area became two British colonies called Upper Canada and Lower Canada collectively named The Canadas, until their union as the British Province of Canada in 1841. Upon Confederation in 1867, Canada was adopted as the name for the new country at the London Conference. The transition away from the use of Dominion was formally reflected in 1982 with the passage of the Canada Act, later that year, the name of national holiday was changed from Dominion Day to Canada Day
30.
Virgate
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The virgate, yardland, or yard of land was an English unit of land. Primarily a measure of tax assessment rather than area, the virgate was reckoned as ¼ hide. It was equivalent to two of the Danelaws oxgangs, the name derives from the Old English gyrd landes, from yards former meaning as a measuring stick employed in reckoning acres. The word is unrelated to the yard of land around a dwelling. Virgate is a much later retronym, anglicizing the yardlands latinized form virgāta after the advent of the yard rendered the original name ambiguous, the virgate was reckoned as the amount of land that a team of two oxen could plough in a single annual season. It was equivalent to a quarter of a hide, so was nominally thirty acres, in some parts of England, it was divided into four nooks. Nooks were occasionally further divided into a farundel, the Danelaw equivalent of a virgate was two oxgangs or ‘bovates’. These were considered to represent the amount of land that could be worked in an annual season by a single ox. As such, the oxgang represented a parallel division of the carucate
31.
Ell
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In English-speaking countries, these included the Flemish ell, English ell and French ell, some of which are thought to derive from a double ell. In England, the ell was usually 45 in, or a yard and it was mainly used in the tailoring business but is now obsolete. Although the exact length was never defined in English law, standards were kept, the Viking ell was the measure from the elbow to the tip of the middle finger, about 18 inches. The Viking ell or primitive ell was used in Iceland up to the 13th century, by the 13th century, a law set the stika as equal to 2 ells which was the English ell of the time. An ell-wand or ellwand was a rod of length one ell used for official measurement, edward I of England required that every town have one. In Scotland, the Belt of Orion was called the Kings Ellwand, the Scottish ell was standardised in 1661, with the exemplar to be kept in the custody of Edinburgh. It comes from Middle English elle and it was used in the popular expression Gie im an inch, an hell tak an ell. The Ell Shop in Dunkeld, Perth and Kinross, is so called from the 18th century iron ell-stick attached to one corner, once used to measure cloth and other commodities in the adjacent market-place. The shaft of the old 17th century Kincardine Mercat cross stands in the square of Fettercairn, Scottish measures were made obsolete, and English measurements made standard in Scotland, by act of parliament in 1824. The Scottish ell was equivalent to, Scottish measures, 3 1⁄12 feet Metric system,94.1318 cm Imperial system,1.03 international yards,37.1 inches This article incorporates text from Dwellys Gaelic Dictionary. Collins Encyclopedia of Scotland Scottish National Dictionary and Dictionary of the Older Scottish Tongue Weights and Measures, by D. Richard Torrance, SAFHS, Edinburgh,1996, ISBN 1-874722-09-9
32.
Rod (unit)
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The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyors chain and 5.0292 meters. The rod is useful as a unit of length because whole number multiples of it can equal one acre of square measure. The perfect acre is an area of 43,560 square feet, bounded by sides 660 feet by 66 feet long, or 220 yards by 22 yards long. Thus, an acre is 160 square rods, since the adoption of the international yard on 1 July 1959, the rod has been equal to exactly 5.0292 meters. Its name derives from the Ancient Roman unit, the pertica, the measure also has a relationship to the military pike of about the same size and both measures date from the sixteenth century, when that weapon was still utilized in national armies. Surveyors rods and chains are still utilized in rough terrains with heavy overgrowth where laser or other measurements are difficult or impossible. In old English, the lug is also used. In England, the perch was officially discouraged in favour of the rod as early as the 15th century, however, local customs maintained its use. In Ireland, a perch was standardized at 21 feet, making an Irish chain, furlong, until English King Henry VIII seized the lands of the Roman Catholic Church in 1536, land measures as we now know them were essentially unknown. Instead a narrative system of landmarks and lists was used, a chain is a larger unit of length measuring 66 feet, or 22 yards, or 100 links, or 4 rods. There are 10 chains or 40 rods in a furlong, and so 80 chains or 320 rods in one statute mile, by the time of the industrial revolution and the quickening of land sales, canal and railway surveys, et al. The rod as a measure was standardized by Edmund Gunter in England in 1607 as one-fourth of a chain. The perch as a measure in Rome was 10 feet. To confuse matters further, by ancient Roman definition, an arpent equalled 120 Roman feet, the related unit of square measure was the scrupulum or decempeda quadrata, equivalent to about 8.76 m2. They were subdivided in different ways, and were of many different lengths. Based on data from the following, N - Niemann, in England, the rod is first defined in law by the Composition of Yards and Perches, one of the statutes of uncertain date from the late 13th to early 14th centuries. The length of the chain was standardized in 1620 by Edmund Gunter at exactly four rods, fields were measured in acres, which were one chain by one furlong. Bars of metal one rod long were used as standards of length when surveying land, the rod was still in use as a common unit of measurement in the mid-19th century, when Henry David Thoreau used it frequently when describing distances in his work, Walden
33.
Old English
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Old English or Anglo-Saxon is the earliest historical form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers probably in the mid 5th century, Old English developed from a set of Anglo-Frisian or North Sea Germanic dialects originally spoken by Germanic tribes traditionally known as the Angles, Saxons, and Jutes. As the Anglo-Saxons became dominant in England, their language replaced the languages of Roman Britain, Common Brittonic, a Celtic language, Old English had four main dialects, associated with particular Anglo-Saxon kingdoms, Mercian, Northumbrian, Kentish and West Saxon. It was West Saxon that formed the basis for the standard of the later Old English period, although the dominant forms of Middle. The speech of eastern and northern parts of England was subject to strong Old Norse influence due to Scandinavian rule, Old English is one of the West Germanic languages, and its closest relatives are Old Frisian and Old Saxon. Like other old Germanic languages, it is different from Modern English. Old English grammar is similar to that of modern German, nouns, adjectives, pronouns, and verbs have many inflectional endings and forms. The oldest Old English inscriptions were using a runic system. Old English was not static, and its usage covered a period of 700 years, from the Anglo-Saxon settlement of Britain in the 5th century to the late 11th century, some time after the Norman invasion. While indicating that the establishment of dates is a process, Albert Baugh dates Old English from 450 to 1150, a period of full inflections. Perhaps around 85 per cent of Old English words are no longer in use, Old English is a West Germanic language, developing out of Ingvaeonic dialects from the 5th century. It came to be spoken over most of the territory of the Anglo-Saxon kingdoms which became the Kingdom of England and this included most of present-day England, as well as part of what is now southeastern Scotland, which for several centuries belonged to the Anglo-Saxon kingdom of Northumbria. Other parts of the island – Wales and most of Scotland – continued to use Celtic languages, Norse was also widely spoken in the parts of England which fell under Danish law. Anglo-Saxon literacy developed after Christianisation in the late 7th century, the oldest surviving text of Old English literature is Cædmons Hymn, composed between 658 and 680. There is a corpus of runic inscriptions from the 5th to 7th centuries. The Old English Latin alphabet was introduced around the 9th century, with the unification of the Anglo-Saxon kingdoms by Alfred the Great in the later 9th century, the language of government and literature became standardised around the West Saxon dialect. In Old English, typical of the development of literature, poetry arose before prose, a later literary standard, dating from the later 10th century, arose under the influence of Bishop Æthelwold of Winchester, and was followed by such writers as the prolific Ælfric of Eynsham. This form of the language is known as the Winchester standard and it is considered to represent the classical form of Old English
34.
Branch
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A branch or tree branch is a woody structural member connected to but not part of the central trunk of a tree. Large branches are known as boughs and small branches are known as twigs, due to a broad range of species of trees, branches and twigs can be seen in many different shapes and sizes. While branches can be horizontal, vertical, or diagonal. The term twig often refers to a terminus, while bough refers only to branches coming directly from the trunk, because of the enormous quantity of branches in the world, there are a variety of names in English alone for them. In general however, unspecific words for a branch have been replaced by the branch itself. A bough can also be called a limb or arm, and though these are arguably metaphors, a crotch or fork is an area where a trunk splits into two or more boughs. A twig is frequently referred to as a sprig as well, other words for twig include branchlet, spray, and surcle, as well as the technical terms surculus and ramulus. Branches found under larger branches can be called underbranches, some branches from specific trees have their own names, such as osiers and withes or withies, which come from willows. Often trees have certain words which, in English, are naturally collocated, such as holly and mistletoe, similarly, the branch of a cherry tree is generally referred to as a cherry branch, while other such formations carry no such alliance. A good example of this versatility is oak, which could be referred to as variously an oak branch, an oaken branch, a branch of oak, or the branch of an oak. Once a branch has been cut or in any other way removed from its source, it is most commonly referred to as a stick, thin, flexible sticks are called switches, wands, shrags, or vimina. In Old English, there are words for branch, including seten, stofn, telgor. There are also numerous words, such as blēd, bōgincel, ōwæstm. Numerous other words for twigs and boughs abound, including tān, latin words for branch are ramus or cladus. The second term is a found in other modern words such as cladodonts or cladogram. Basal shoot Plant stem Root Shoot Stolon Switch Trunk Turion Twig Wand
35.
Measuring rod
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A measuring rod is a tool used to physically measure lengths and survey areas of various sizes. Most measuring rods are round or square sectioned, however they can be flat boards, some have markings at regular intervals. It is likely that the rod was used before the line. The oldest preserved measuring rod is a bar which was found by the German Assyriologist Eckhard Unger while excavating at Nippur. The bar dates from c.2650 BC. and Unger claimed it was used as a measurement standard, measuring rods for different purposes and sizes have been found from China and elsewhere dating to the early 2nd millennium B. C. E. Cubit-rods of wood or stone were used in Ancient Egypt, fourteen of these were described and compared by Lepsius in 1865. Flinders Petrie reported on a rod that shows a length of 520.5 mm, a slate measuring rod was also found, divided into fractions of a Royal Cubit and dating to the time of Akhenaten. Further cubit rods have been found in the tombs of officials, two examples are known from the tomb of Maya—the treasurer of the 18th dynasty pharaoh Tutankhamun—in Saqqara. Another was found in the tomb of Kha in Thebes and these cubits are ca 52.5 cm long and are divided into seven palms, each palm is divided into four fingers and the fingers are further subdivided. Another wooden cubit rod was found in Theban tomb TT40 bearing the name of Tutankhamun. Egyptian measuring rods also had marks for the Remen measurement of approximately 370mm, used in construction of the Pyramids. A hazel measuring rod recovered from a Bronze Age burial mound in Borum Eshøj, the megalithic structures of Great Britain has been hypothesized to have been built by a Megalithic Yard, though some authorities believe these structures have been measured out by pacing. Several tentative Bronze age bone fragments have been suggested as being parts of a rod for this hypothetical measurement. Republican Rome used several measures, including the various Greek feet measurements, standardisation was introduced by Agrippa in 29 BC, replacing all previous measurements by a Roman foot of 29.6 cm, which became the foot of Imperial Rome. The Roman measuring rod was 10 Roman feet long, and hence called a decempeda and it was usually of square section capped at both ends by a metal shoe, and painted in alternating colours. Together with the groma and Dioptra the decempeda formed the basic kit for the Roman surveyors, the measuring rod is frequently found depicted in Roman art showing the surveyors at work. A shorter folding yardstick one Roman foot long is known from excavations of a Roman fort in Niederburg, in the Middle Ages, bars were used as standards of length when surveying land. These bars often used a unit of measure called a rod, of equal to 5.5 yards,5.0292 metres,16.5 feet
36.
Ine of Wessex
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Ine was King of Wessex from 688 to 726. He was unable to retain the gains of his predecessor, Cædwalla. Ine is noted for his code of laws, which he issued in about 694 and these laws were the first issued by an Anglo-Saxon king outside Kent. They shed much light on the history of Anglo-Saxon society, trade increased significantly during Ines reign, with the town of Hamwic becoming prominent. It was probably during Ines reign that the West Saxons began to mint coins, Ine abdicated in 726 to go to Rome, leaving, in the words of the contemporary chronicler Bede, the kingdom to younger men. Early sources agree that Ine was the son of Cenred, Ines siblings included a brother, Ingild, and two sisters, Cuthburh and Cwenburg. Cuthburh was married to King Aldfrith of Northumbria, and Ine himself was married to Æthelburg, Bede tells that Ine was of the blood royal, by which he means the royal line of the Gewisse, the early West Saxon tribal name. The genealogy of Ine and of the kings of Wessex is known from two sources, the Anglo-Saxon Chronicle and the West Saxon Genealogical Regnal List. The Chronicle was created in the late 9th century, probably at the court of Alfred the Great and these are often at variance with the more extensive information in the Regnal List. Ines predecessor on the throne of Wessex was Cædwalla, but there is uncertainty about the transition from Cædwalla to Ine. Cædwalla abdicated in 688 and departed for Rome to be baptized, according to the West Saxon Genealogical Regnal List, Ine reigned for 37 years, abdicating in 726. These dates imply that he did not gain the throne until 689, Ine acknowledges his fathers help in his code of laws, and there is also a surviving land-grant that indicates Cenred was still reigning in Wessex after Ines accession. The extent of West Saxon territory at the start of Ines reign is well known. The upper Thames valley on both sides of the river had long been the territory of the Gewisse, though Cædwalla had lost territory north of the river to the kingdom of Mercia before Ines accession. To the west, Ceawlin of Wessex is known to have reached the Bristol Channel one hundred years before, on the West Saxons eastern border was the kingdom of the East Saxons, which included London and what is now Surrey. To the southeast were the South Saxons, on the coast east of the Isle of Wight, beyond Sussex lay the kingdom of Kent. Ines predecessor, Cædwalla, had made himself overlord of most of these southern kingdoms, though he had not been able to prevent Mercian inroads along the upper Thames. Ine retained control of the Isle of Wight, and made advances in Dumnonia
37.
Wessex
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Wessex was an Anglo-Saxon kingdom in the south of Great Britain, from 519 until England was unified by Æthelstan in the early 10th century. The Anglo-Saxons believed that Wessex was founded by Cerdic and Cynric, the two main sources for the history of Wessex are the Anglo-Saxon Chronicle and the West Saxon Genealogical Regnal List, which sometimes conflict. Wessex became a Christian kingdom after Cenwalh was baptised and was expanded under his rule, cædwalla later conquered Sussex, Kent and the Isle of Wight. His successor, Ine, issued one of the oldest surviving English law codes, the throne subsequently passed to a series of kings with unknown genealogies. During the 8th century, as the hegemony of Mercia grew and it was during this period that the system of shires was established. Under Egbert, Surrey, Sussex, Kent, Essex, and Mercia and he also obtained the overlordship of the Northumbrian king. However, Mercian independence was restored in 830, during the reign of his successor, Æthelwulf, a Danish army arrived in the Thames estuary, but was decisively defeated. When Æthelwulfs son, Æthelbald, usurped the throne, the kingdom was divided to avoid war, Æthelwulf was succeeded in turn by his four sons, the youngest being Alfred the Great. Wessex was invaded by the Danes in 871, and Alfred was compelled to pay them to leave and they returned in 876, but were forced to withdraw. In 878 they forced Alfred to flee to the Somerset Levels, during his reign Alfred issued a new law code, gathered scholars to his court and was able to devote funds to building ships, organising an army and establishing a system of burhs. Alfreds son, Edward, captured the eastern Midlands and East Anglia from the Danes and became ruler of Mercia in 918 upon the death of his sister, Edwards son, Æthelstan, conquered Northumbria in 927, and England became a unified kingdom for the first time. Cnut the Great, who conquered England in 1016, created the wealthy and powerful earldom of Wessex, modern archaeologists use the term Wessex culture for a Middle Bronze Age culture in this area. Although agriculture and hunting were pursued during this period, there is little archaeological evidence of human settlements. During the Roman occupation numerous country villas with attached farms were established across Wessex, the Romans, or rather the Romano-British, built another major road that integrated Wessex, running eastwards from Exeter through Dorchester to Winchester and Silchester and on to London. The early 4th century CE was a time in Roman Britain. However, following a previous incursion in 360 that was stopped by Roman forces and they devastated many parts of Britain and laid siege to London. The Romans responded promptly, and Count Theodosius had recovered the land up to the Wall by 368, the Romans temporarily ceased to rule Britain on the death of Magnus Maximus in 388. Stilicho attempted to restore Roman authority in the late 390s, two subsequent Roman rulers of Britain, appointed by the remaining troops, were murdered
38.
Lindisfarne Gospels
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The manuscript is one of the finest works in the unique style of Hiberno-Saxon or Insular art, combining Mediterranean, Anglo-Saxon and Celtic elements. The Lindisfarne Gospels are presumed to be the work of a monk named Eadfrith, current scholarship indicates a date around 715, and it is believed they were produced in honour of St. Cuthbert. During the Viking raids on Lindisfarne this jewelled cover was lost, the text is written in insular script, and is the best documented and most complete insular manuscript of the period. In the 10th century an Old English translation of the Gospels was made and this is the oldest extant translation of the Gospels into the English language. Cottons library came to the British Museum in the 18th century, Lindisfarne, also known as Holy Island, is located off the coast of Northumberland in northern England. In around 635 AD, the Irish missionary Aidan founded the Lindisfarne monastery on “a small outcrop of land” on Lindisfarne, King Oswald of Northumbria sent Aidan from Iona to preach to and baptize the pagan Anglo-Saxons, following the conversion to Christianity of the Northumbrian monarchy in 627. By Aidan’s death in 651, the Christian faith was becoming well-established in the area. In the tenth century, about 250 years after the production of the book, Aldred, in his colophon he recorded the names of the four men who produced the Lindisfarne Gospels. Some scholars have argued that Eadfrith and Ethelwald did not produce the manuscript, however, Janet Backhouse argues for the validity of the statement by pointing out that, there is no reason to doubt statement because he was recording a well established tradition. Eadfrith and Ethelwald were both bishops at the monastery of Lindisfarne where the manuscript was produced, as Alan Thacker notes, the Lindisfarne Gospels are undoubtedly the work of a single hand, and Eadfrith remains regarded as the scribe and painter of the Lindisfarne Gospels. According to Aldred’s colophon, the Lindisfarne Gospels were made in honor of God and Saint Cuthbert, scholars think that the manuscript was written sometime between Cuthbert’s death in 687 and Eadfrith’s death in 721. Due to increasingly slack religious practice in Lindisfarne, Cuthbert was sent to Lindisfarne as a way to reform the religious community, in Lindisfarne Cuthbert began to take on a solitary lifestyle, eventually moving to Inner Farne Island where he built a hermitage. Cuthbert agreed to become bishop at the request of King Ecgfrith in 684, Cuthbert died on 20 March 687, and was buried in Lindisfarne. As a venerated saint his tomb attracted many pilgrims to Lindisfarne, the Lindisfarne Gospels is a Christian manuscript, containing the gospels of Matthew, Luke, Mark, and John and the life and teachings of Jesus Christ. The manuscript was used for purposes to promote and celebrate the Christian religion. The Lindisfarne Gospels manuscript was produced in a scriptorium in the monastery of Lindisfarne, the pages of the Lindisfarne gospels are vellum, made from the skins of sheep or calves and evidence from the manuscript reveals that the vellum used for the Gospels was made from calfskin. The text of the manuscript is written “in a dense, dark brown ink, often almost black, which contains particles of carbon from soot or lamp black”. The pens used for the manuscript could have cut from either quills or reeds
39.
Messengers from John the Baptist
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The messengers who came from John the Baptist to Jesus are referred to in Matthew 11, 2-6 and Luke 7, 18-23 in the New Testament. Their deputation to meet with Jesus is recounted after the Baptism of Jesus and he seeks confirmation as to whether Jesus is the prophesied Messiah of the Old Testament. John sends his disciples as messengers to ask a question from Jesus, Jesus replied back to John through the messengers to take note of all the miraculous works he has done as described in Luke 7,22. According to the Gospel of Matthew, When John heard in prison what Christ was doing, he sent his disciples to ask him, Are you the one who was to come, blessed is the man who does not fall away on account of me. Biblical commentator Marvin Vincent argues that the reading is διά. Following this episode, Jesus begins to speak to the crowds about John the Baptist, according to the reports of Matthew 11, 7-11 and Luke 7, 24-28
40.
Gospel of Matthew
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The Gospel According to Matthew is the first book of the New Testament. The narrative tells how the Messiah, Jesus, rejected by Israel, most scholars believe the Gospel of Matthew was composed between AD80 and 90, with a range of possibility between AD70 to 110. The title Son of David identifies Jesus as the healing and miracle-working Messiah of Israel, as Son of Man he will return to judge the world, an expectation which his disciples recognise but of which his enemies are unaware. As Son of God he is God revealing himself through his son, the gospel reflects the struggles and conflicts between the evangelists community and the other Jews, particularly with its sharp criticism of the scribes and Pharisees. The original versions of the Gospel of Matthew and the gospels are lost. The oldest relatively complete extant manuscripts of the Bible are the Codex Vaticanus and the Codex Sinaiticus, besides these, there exist manuscript fragments ranging from a few verses to whole chapters. P104 and P67 are notable fragments of Matthew, in the process of recopying, variations slipped in, different regional manuscript traditions emerged, and corrections and adjustments were made. The Gospel of Matthew is anonymous, the author is not named within the text, the consensus is that Papias does not describe the Gospel of Matthew as we know it, and it is generally accepted that Matthew was written in Greek, not in Aramaic or Hebrew. The majority view of scholars is that Mark was the first gospel to be composed. The author of Matthew did not, however, simply copy Mark, an additional 220 verses, shared by Matthew and Luke but not found in Mark, from a second source, a hypothetical collection of sayings to which scholars give the name Quelle, or the Q source. The author also had at his disposal the Greek scriptures, both as book-scrolls and in the form of collections, and, if Papias is correct. The majority view among scholars is that Matthew was a product of the last quarter of the 1st century, the Christian community to which Matthew belonged, like many 1st-century Christians, were still part of the larger Jewish community, hence the designation Jewish Christian to describe them. The author of Matthew wrote for a community of Greek-speaking Jewish Christians located probably in Syria, Matthew, alone among the gospels, alternates five blocks of narrative with five of discourse, marking each off with the phrase When Jesus had finished. The Gospel of Matthew begins with the words The Book of Genealogy of Jesus Christ, John baptizes Jesus, and the Holy Spirit descends upon him. Jesus prays and meditates in the wilderness for forty days, and is tempted by Satan and his early ministry by word and deed in Galilee meets with much success, and leads to the Sermon on the Mount, the first of the discourses. The sermon presents the ethics of the kingdom of God, introduced by the Beatitudes and it concludes with a reminder that the response to the kingdom will have eternal consequences, and the crowds amazed response leads into the next narrative block. From the authoritative words of Jesus the gospel turns to three sets of three miracles interwoven with two sets of two stories, followed by a discourse on mission and suffering. Opposition to Jesus comes to a head with accusations that his deeds are done through the power of Satan, Jesus in turn accuses his opponents of blaspheming the Holy Spirit
41.
Middle English
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This stage of the development of the English language roughly followed the High to the Late Middle Ages. Middle English developed out of Late Old English, seeing many dramatic changes in its grammar, pronunciation and this largely forms the basis for Modern English spelling, although pronunciation has changed considerably since that time. Middle English was succeeded in England by the era of Early Modern English, by that time, a variant of the Northumbrian dialect was developing into the Scots language. During the Middle English period many Old English grammatical features were simplified or disappeared, noun, adjective and verb inflections were simplified, a process that included the reduction of most grammatical case distinctions. Middle English also saw an adoption of Norman French vocabulary, especially in areas such as politics, law. Everyday English vocabulary remained mostly Germanic, with Old Norse influence becoming apparent, significant changes in pronunciation took place, especially for long vowels and diphthongs, which in the later Middle English period began to undergo the Great Vowel Shift. Little survives of early Middle English literature, most likely due to the Norman domination, poets wrote both in the vernacular and courtly English. It is popularly believed that William Shakespeare wrote in Middle English, the latter part of the 11th century was a period of transition from Late Old English to Early Middle English. The influence of Old Norse certainly helped move English from a synthetic language towards a more analytic or isolating word order and it was, after all, a salutary influence. The gain was greater than the loss, there was a gain in directness, in clarity, and in strength. The change to Old English from Old Norse was substantive, pervasive and it is most important to recognise that in many words the English and Scandinavian language differed chiefly in their inflectional elements. The body of the word was so nearly the same in the two languages only the endings would put obstacles in the way of mutual understanding. In the mixed population which existed in the Danelaw these endings must have led to confusion, tending gradually to become obscured. This blending of peoples and languages resulted in simplifying English grammar. There are also many Norman-derived terms relating to the cultures that arose in the 12th century. Sometimes, and particularly later, words were taken from Latin, giving such sets as kingly, later French borrowings came from standard rather than Norman French, this leads to such cognate pairs as warden, guardian. The end of Anglo-Saxon rule did not, of course, change the language immediately, the general population would have spoken the same dialects as before the Conquest, these changed slowly until written records of them became available for study, which varies in different regions. Once the writing of Old English came to an end, Middle English had no standard language, Early Middle English has a largely Anglo-Saxon vocabulary, but a greatly simplified inflectional system
42.
Surveying
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Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional position of points and the distances and angles between them. A land surveying professional is called a land surveyor, Surveyors work with elements of geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages and the law. Surveying has been an element in the development of the environment since the beginning of recorded history. The planning and execution of most forms of construction require it and it is also used in transport, communications, mapping, and the definition of legal boundaries for land ownership. It is an important tool for research in other scientific disciplines. Basic surveyance has occurred since humans built the first large structures, the prehistoric monument at Stonehenge was set out by prehistoric surveyors using peg and rope geometry. In ancient Egypt, a rope stretcher would use simple geometry to re-establish boundaries after the floods of the Nile River. The almost perfect squareness and north-south orientation of the Great Pyramid of Giza, built c.2700 BC, the Groma instrument originated in Mesopotamia. The mathematician Liu Hui described ways of measuring distant objects in his work Haidao Suanjing or The Sea Island Mathematical Manual, the Romans recognized land surveyors as a profession. They established the basic measurements under which the Roman Empire was divided, Roman surveyors were known as Gromatici. In medieval Europe, beating the bounds maintained the boundaries of a village or parish and this was the practice of gathering a group of residents and walking around the parish or village to establish a communal memory of the boundaries. Young boys were included to ensure the memory lasted as long as possible, in England, William the Conqueror commissioned the Domesday Book in 1086. It recorded the names of all the owners, the area of land they owned, the quality of the land. It did not include maps showing exact locations, abel Foullon described a plane table in 1551, but it is thought that the instrument was in use earlier as his description is of a developed instrument. Gunters chain was introduced in 1620 by English mathematician Edmund Gunter and it enabled plots of land to be accurately surveyed and plotted for legal and commercial purposes. Leonard Digges described a Theodolite that measured horizontal angles in his book A geometric practice named Pantometria, joshua Habermel created a theodolite with a compass and tripod in 1576. Johnathon Sission was the first to incorporate a telescope on a theodolite in 1725, in the 18th century, modern techniques and instruments for surveying began to be used. Jesse Ramsden introduced the first precision theodolite in 1787 and it was an instrument for measuring angles in the horizontal and vertical planes
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Acre
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The acre is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain by 1 furlong, lucia, St. Helena, St. Kitts and Nevis, St. Vincent and the Grenadines, Turks and Caicos, the United Kingdom, the United States and the US Virgin Islands. The international symbol of the acre is ac, the most commonly used acre today is the international acre. In the United States both the international acre and the US survey acre are in use, but differ by two parts per million, see below. The most common use of the acre is to measure tracts of land, one international acre is defined as exactly 4,046.8564224 square metres. An acre was defined in the Middle Ages, being the amount of land that could be ploughed in one day with a yoke of oxen. One acre equals 0.0015625 square miles,4,840 square yards,43,560 square feet or about 4,047 square metres. While all modern variants of the acre contain 4,840 square yards, there are definitions of a yard. A square enclosing one acre is approximately 69.57 yards, as a unit of measure, an acre has no prescribed shape, any area of 43,560 square feet is an acre. In the international yard and pound agreement of 1959 the United States, consequently, the international acre is exactly 4,046.8564224 square metres. The US survey acre is about 4,046.872609874252 square metres, its value is based on an inch defined by 1 metre =39.37 inches exactly. Surveyors in the United States use both international and survey feet, and consequently, both varieties of acre. Since the difference between the US survey acre and international acre is only about a quarter of the size of an A4 sheet of paper, areas are seldom measured with sufficient accuracy for the different definitions to be detectable. In India, residential plots are measured in cents or decimal, in Sri Lanka the division of an acre into 160 perches or 4 roods is common. To be more exact, one acre is 90.75 percent of a 100 yards long by 53.33 yards wide American football field, the full field, including the end zones, covers approximately 1.32 acres. For residents of countries, the acre might be envisaged as approximately half of a 105 metres long by 68 metres wide association football pitch. It may also be remembered as 44,000 square feet, in English it was historically spelled aker. The acre was approximately the amount of land tillable by a yoke of oxen in one day and this explains one definition as the area of a rectangle with sides of length one chain and one furlong
The dictionary definition of yard at Wiktionary