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92-410: The SD80MAC was a 5,000 horsepower (3.7 MW) C-C diesel-electric locomotive . It was powered by a 20-cylinder version of EMD's 710G prime mover , and was the second diesel locomotive by GM-EMD to use a V20 engine , since EMD's SD45 series. It introduced a wide radiator housing similar to GE Transportation locomotives and the placement of dynamic brakes at the rear of the locomotive, which

184-415: A ' brewery horse ' could produce 32,400 foot-pounds [43,929 J] per minute." James Watt and Matthew Boulton standardized that figure at 33,000 foot-pounds (44,742 J) per minute the next year. A common legend states that the unit was created when one of Watt's first customers, a brewer, specifically demanded an engine that would match a horse, and chose the strongest horse he had and driving it to

276-697: A European style of feudalism to Scotland along with an influx of people of French descent – by invitation, unlike England where it was by conquest. To this day, many of the common family names of Scotland can trace ancestry to Normans from this period, such as the Stewarts , the Bruces , the Hamiltons , the Wallaces and the Melvilles . The Northern Isles and some parts of Caithness were Norn -speaking (the west of Caithness

368-692: A centre for Scottish migration in the 1930s. In 1961 a third of residents were born in Scotland, and in 2011 the figure was 12.7%. Other European countries have had their share of Scots immigrants. The Scots have emigrated to mainland Europe for centuries as merchants and soldiers. Many emigrated to France, Poland, Italy , Germany, Scandinavia, and the Netherlands. Recently some scholars suggested that up to 250,000 Russian nationals may have Scottish ancestry. A number of Scottish people settled in South Africa in

460-520: A connection to Scotland. This connection may be active through cultural, linguistic, friendship, or professional links, or who may simply be interested Scotland’s heritage or culture). The majority of Scotch-Irish Americans originally came from Lowland Scotland and Northern England before migrating to the province of Ulster in Ireland (see Plantation of Ulster ) and thence, beginning about five generations later, to North America in large numbers during

552-429: A group of engineers modified a dynometer to be able to measure how much horsepower a horse can produce. This horse was measured to 5.7 hp (4.3 kW). When torque T is in pound-foot units, rotational speed N is in rpm , the resulting power in horsepower is The constant 5252 is the rounded value of (33,000 ft⋅lbf/min)/(2π rad/rev). When torque T is in inch-pounds, The constant 63,025

644-526: A healthy human can produce about 1.2 hp (0.89 kW) briefly (see orders of magnitude ) and sustain about 0.1 hp (0.075 kW) indefinitely; trained athletes can manage up to about 2.5 hp (1.9 kW) briefly and 0.35 hp (0.26 kW) for a period of several hours. The Jamaican sprinter Usain Bolt produced a maximum of 3.5 hp (2.6 kW) 0.89 seconds into his 9.58 second 100-metre (109.4 yd) sprint world record in 2009. In 2023

736-628: A museum, 'The Scots House' in the town of Veere was the only place outwith Scotland where Scots Law was practised. In Rotterdam, meanwhile, the doors of the Scots International Church have remained open since 1643. The first Scots to be mentioned in Russia's history were the Scottish soldiers in Muscovy referred to as early as the 14th century. Among the 'soldiers of fortune' was the ancestor of

828-496: Is a coefficient of theoretical brake horsepower and cylinder pressures during combustion. Nominal horsepower (nhp) is an early 19th-century rule of thumb used to estimate the power of steam engines. It assumed a steam pressure of 7 psi (48 kPa). Scottish people Modern ethnicities The Scottish people or Scots ( Scots : Scots fowk ; Scottish Gaelic : Albannaich ) are an ethnic group and nation native to Scotland . Historically, they emerged in

920-563: Is a quieter location, features that were incorporated into the SD90MAC and SD70ACe models. Key spotting differences between the SD80MAC and SD90MAC include no external rear sandbox on the SD90MAC, no rear lighted number boards on the SD90MAC, and the placement of the front numberboards (above the cab windows on the SD80MAC, on the nose on most SD90MACs). The SD80MAC also had recessed red marker lights in

1012-420: Is also used in many places to symbolize brake horsepower. Drawbar power (dbp) is the power a railway locomotive has available to haul a train or an agricultural tractor to pull an implement. This is a measured figure rather than a calculated one. A special railway car called a dynamometer car coupled behind the locomotive keeps a continuous record of the drawbar pull exerted, and the speed. From these,

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1104-530: Is currently for export only, and these specific locomotives will run on Vale Mining's 5 ft 3 in ( 1,600 mm ) broad gauge trackage. Another broad gauge variant also came in 2012 only, that is, the EMD GT50AC , also known as the Indian locomotive class WDG-5 , a smaller and lighter 135-ton variant, with an up-tweaked EMD 20N-710G3B-EC engine, capable of producing 5,500 HP (4.1MW) @ 910 RPM, to serve

1196-460: Is equivalent to a boiler heat output of 33,469 Btu/h (9.809 kW). Present industrial practice is to define "boiler horsepower" as a boiler thermal output equal to 33,475 Btu/h (9.811 kW), which is very close to the original and revised definitions. Boiler horsepower is still used to measure boiler output in industrial boiler engineering in the US. Boiler horsepower is abbreviated BHP, which

1288-450: Is equivalent to a boiler heat output of 33,485 Btu/h (9.813 kW). A few years later in 1884, the ASME re-defined the boiler horsepower as the thermal output equal to the evaporation of 34.5 pounds per hour of water "from and at" 212 °F (100 °C). This considerably simplified boiler testing, and provided more accurate comparisons of the boilers at that time. This revised definition

1380-481: Is in psi, and flow rate is in US gallons per minute. Drilling rigs are powered mechanically by rotating the drill pipe from above. Hydraulic power is still needed though, as 1 500 to 5 000 W are required to push mud through the drill bit to clear waste rock. Additional hydraulic power may also be used to drive a down-hole mud motor to power directional drilling . When using SI units, the equation becomes coherent and there

1472-465: Is needed to pull a drawbar load of 2,025 pounds-force at 5 miles per hour? { P } h p = 2025 × 5 375 = 27. {\displaystyle \{P\}_{\mathrm {hp} }={\frac {2025\times 5}{375}}=27.} The constant 375 is because 1 hp = 375 lbf⋅mph. If other units are used, the constant is different. When using coherent SI units (watts, newtons, and metres per second), no constant

1564-507: Is needed, and the formula becomes P = Fv . This formula may also be used to calculate the power of a jet engine, using the speed of the jet and the thrust required to maintain that speed. Example: how much power is generated with a thrust of 4000 pounds at 400 miles per hour? { P } h p = 4000 × 400 375 = 4266.7. {\displaystyle \{P\}_{\mathrm {hp} }={\frac {4000\times 400}{375}}=4266.7.} This measure

1656-434: Is no dividing constant. where pressure is in pascals (Pa), and flow rate is in cubic metres per second (m ). Boiler horsepower is a boiler 's capacity to deliver steam to a steam engine and is not the same unit of power as the 550 ft lb/s definition. One boiler horsepower is equal to the thermal energy rate required to evaporate 34.5 pounds (15.6 kg) of fresh water at 212 °F (100 °C) in one hour. In

1748-506: Is ordinarily stated in watts or kilowatts. In the United States, the power output is stated in horsepower which, for this purpose, is defined as exactly 746 W. Hydraulic horsepower can represent the power available within hydraulic machinery , power through the down-hole nozzle of a drilling rig , or can be used to estimate the mechanical power needed to generate a known hydraulic flow rate. It may be calculated as where pressure

1840-595: Is still spoken by a small number of residents. Cape Breton is the home of the Gaelic College of Celtic Arts and Crafts . Glengarry County in present-day Eastern Ontario is a historic county that was set up as a settlement for Highland Scots , where many from the Highlands settled to preserve their culture as a result of the Highland Clearances. Gaelic was the native language of the community since its settlement in

1932-738: Is the approximation of Assuming the third CGPM (1901, CR 70) definition of standard gravity , g n = 9.80665 m/s , is used to define the pound-force as well as the kilogram force, and the international avoirdupois pound (1959), one imperial horsepower is: Or given that 1 hp = 550 ft⋅lbf/s, 1 ft = 0.3048 m, 1 lbf ≈ 4.448 N, 1 J = 1 N⋅m, 1 W = 1 J/s: 1 hp ≈ 745.7 W The various units used to indicate this definition ( PS , KM , cv , hk , pk , k , ks and ch ) all translate to horse power in English. British manufacturers often intermix metric horsepower and mechanical horsepower depending on

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2024-491: Is the fourth most commonly nominated ancestry and represents over 8.9% of the total population of Australia. Significant numbers of Scottish people also settled in New Zealand. Approximately 20 per cent of the original European settler population of New Zealand came from Scotland, and Scottish influence is still visible around the country. The South Island city of Dunedin , in particular, is known for its Scottish heritage and

2116-576: The Borders ( OE: Loðene ), a northern variety of Old English , also known as Early Scots , was spoken. As a result of David I, King of Scots' return from exile in England in 1113, ultimately to assume the throne in 1124 with the help of Anglo-Norman military force, David invited Anglo-Norman families from France and England to settle in lands he granted them to spread a ruling class loyal to him. This Davidian Revolution , as many historians call it, brought

2208-521: The Indian Railways , whose current tracks are weak to handle very heavy locomotives, just like how EMD GT46MAC WDG-4 was developed from SD70MAC by reducing the weight. The seven locomotives of the class were developed indigenously by Banaras Locomotive Works (BLW) of India . The locomotives are not a part of the SD80 series, but are completely based on it, making it the second International application of

2300-515: The Middle Ages . Craftsmen and tradesmen followed courtiers and in later centuries a brisk trade grew up between the two nations: Scotland's primary goods (wool, hides, salmon and then coal) in exchange for the luxuries obtainable in the Netherlands, one of the major hubs of European trade. By 1600, trading colonies had grown up on either side of the well-travelled shipping routes: the Dutch settled along

2392-549: The River Tweed to the south. They also occupied the southwest of Scotland up to and including the Plain of Kyle . Their language, Old English , was the earliest form of the language which eventually became known as Scots . Use of the Gaelic language spread through nearly the whole of Scotland by the 9th century, reaching a peak in the 11th to 13th centuries, but was never the language of

2484-766: The United States and Canada . Scots have travelled internationally for centuries, helping to build Scotland's international reputation and the promotion of Scottish culture , music , literature and art . The Scottish Government uses the term "Scottish connections" when described Scottish diaspora, and recognises Scottish connections as people of Scottish heritage (by ancestry, marriage or other family connection), lived diaspora (those who moved to Scotland to permanently reside at any time for any reason), educational diaspora (alumni of Scottish educational institutions, and Scots studying or working in international institutions) and affinity (individuals who associate themselves with

2576-589: The early Middle Ages from an amalgamation of two Celtic peoples , the Picts and Gaels , who founded the Kingdom of Scotland (or Alba ) in the 9th century. In the following two centuries, Celtic-speaking Cumbrians of Strathclyde and Germanic-speaking Angles of Northumbria became part of Scotland. In the High Middle Ages , during the 12th-century Davidian Revolution , small numbers of Norman nobles migrated to

2668-749: The kilowatt as the official power-measuring unit in EEC directives. Other names for the metric horsepower are the Italian cavallo vapore (cv) , Dutch paardenkracht (pk) , the French cheval-vapeur (ch) , the Spanish caballo de vapor and Portuguese cavalo-vapor (cv) , the Russian лошадиная сила (л. с.) , the Swedish hästkraft (hk) , the Finnish hevosvoima (hv) ,

2760-783: The plantation of Ulster , resulted in a Presbyterian and Scottish society, which formed the Ulster-Scots community. The Protestant Ascendancy did not however benefit them much, as the ascendancy was predominantly Anglican . The number of people of Scottish descent in England and Wales is difficult to quantify due to the many complex migrations on the island, and ancient migration patterns due to wars, famine and conquest. The 2011 Census recorded 708,872 people born in Scotland resident in England, 24,346 resident in Wales and 15,455 resident in Northern Ireland. Northamptonshire town Corby became

2852-634: The ' New World ' lands of North and South America, Australia and New Zealand . The highest concentrations of people of Scottish descent in the world outside of Scotland are in Nova Scotia and Prince Edward Island in Canada, Otago and Murihiku/Southland in New Zealand, the Falkland Islands , and Northern Ireland in the United Kingdom. Canada has the highest level of Scottish descendants per capita in

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2944-561: The 1800s and were known for their road-building expertise, their farming experience, and architectural skills. The largest population of Scots in Latin America is found in Argentina , followed by Chile , , Colombia and Mexico . It is said that the first people from the Low Countries to settle in Scotland came in the wake of Maud's marriage to the Scottish king, David I , during

3036-444: The 1840s, Scots-born immigrants constituted 12% of the non-Aboriginal population. Out of the 1.3 million migrants from Britain to Australia in the period from 1861 to 1914, 13.5% were Scots. Just 5.3% of the convicts transported to Eastern Australia between 1789 and 1852 were Scots. A steady rate of Scottish immigration continued into the 20th century and substantial numbers of Scots continued to arrive after 1945. From 1900 until

3128-484: The 18th century although the number of speakers decreased as a result of English migration . As of the modern 21st century, there are still a few Gaelic speakers in the community. John Kenneth Galbraith in his book The Scotch (Toronto: MacMillan, 1964) documents the descendants of 19th-century Scottish pioneers who settled in Southwestern Ontario and affectionately referred to themselves as 'Scotch'. He states

3220-638: The 18th century as " Erse ") and the Inglis -speaking " Lowlanders " (a language later to be called Scots ). However, movement between the two regions increased over the last few centuries. Highlanders moved to major cities (e.g. Glasgow and Edinburgh) and regions bordering the southern Highlands (e.g. Lowland Stirlingshire and Perthshire). This is evidenced by people with traditional Gaelic surnames (including anglicised varieties) currently living in these areas. Lowlanders also settled in Highland regions such as Moray , which

3312-501: The 1926 Iowa State Fair , they reported that the peak power over a few seconds has been measured to be as high as 14.88 hp (11.10 kW) and also observed that for sustained activity, a work rate of about 1 hp (0.75 kW) per horse is consistent with agricultural advice from both the 19th and 20th centuries and also consistent with a work rate of about four times the basal rate expended by other vertebrates for sustained activity. When considering human-powered equipment ,

3404-529: The 1950s, Scots favoured New South Wales, as well as Western Australia and Southern Australia. A strong cultural Scottish presence is evident in the Highland Games , dance, Tartan Day celebrations, clan and Gaelic-speaking societies found throughout modern Australia. According to the 2011 Australian census , 130,204 Australian residents were born in Scotland, while 1,792,600 claimed Scottish ancestry, either alone or in combination with another ancestry. This

3496-524: The Conrail Historical Society was in contact with Canadian Pacific Kansas City Limited hoping to have one SD80MAC set aside for preservation, after failing to make an agreement with Progress Rail. CSX 4594, formerly CSX 804, and built as CR 4110, was scrapped in January 2014 after being used as a parts donor following a derailment in early 2009. An NS South Fork crew was securing their engines for

3588-820: The Estonian hobujõud (hj) , the Norwegian and Danish hestekraft (hk) , the Hungarian lóerő (LE) , the Czech koňská síla and Slovak konská sila (k or ks ), the Serbo-Croatian konjska snaga (KS) , the Bulgarian конска сила , the Macedonian коњска сила (KC) , the Polish koń mechaniczny (KM) ( lit.   ' mechanical horse ' ), Slovenian konjska moč (KM) ,

3680-773: The Lowlands. In the 13th century, the Norse-Gaels of the Western Isles became part of Scotland, followed by the Norse of the Northern Isles in the 15th century. In modern usage, "Scottish people" or "Scots" refers to anyone whose linguistic, cultural, family ancestral or genetic origins are from Scotland. The Latin word Scoti originally referred to the Gaels, but came to describe all inhabitants of Scotland. Considered pejorative by some,

3772-670: The Scots. The Russian census lists do not distinguish Scots from other British people, so it is hard to establish reliable figures for the number of Scots living and working in modern Russia. From as far back as the mid-16th century there were Scots trading and settling in Poland . A "Scotch Pedlar's Pack in Poland" became a proverbial expression. It usually consisted of cloths, woollen goods and linen kerchiefs (head coverings). Itinerants also sold tin utensils and ironware such as scissors and knives. Along with

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3864-473: The South Island. All over New Zealand, the Scots developed different means to bridge the old homeland and the new. Many Caledonian societies were formed, well over 100 by the early twentieth century, that helped maintain Scottish culture and traditions. From the 1860s, these societies organised annual Caledonian Games throughout New Zealand. The Games were sports meets that brought together Scottish settlers and

3956-648: The Ukrainian кінська сила (к. с.) , the Romanian cal-putere (CP) , and the German Pferdestärke (PS) . In the 19th century, revolutionary-era France had its own unit used to replace the cheval vapeur (horsepower); based on a 100 kgf ⋅m/s standard, it was called the poncelet and was abbreviated p . Tax or fiscal horsepower is a non-linear rating of a motor vehicle for tax purposes. Tax horsepower ratings were originally more or less directly related to

4048-907: The V20-710 prime mover, after the Brazilian SD80ACe. After the split of Conrail in 1999, the SD80MACs were split up between the Norfolk Southern Railway and CSX Transportation . Norfolk Southern received 17 units (numbered 7200–7216) while CSX got 13 (800–812, being renumbered to 4590–4602). The former Conrail units were the first AC traction locomotives owned by Norfolk Southern, with the railroad not ordering more until late 2008 with an order of General Electric's ES44AC. In late 2014, Norfolk Southern announced that they had reached an agreement with CSX Transportation to trade 12 EMD SD40-2 units (NS 3425–3447) for CSX's remaining 12 SD80MACs, leaving NS as

4140-599: The area around Edinburgh. Their descendants gradually occupied all of the Lowlands." Knox College 's Stuart Macdonald, who specialises in early modern Scottish history, writes that during the 18th and 19th centuries, the people of Scotland remained grouped into multiple ethnicities: To speak of Scots as a single ethnic group is also somewhat problematic. It would be more accurate in the eighteenth and nineteenth centuries to talk of two distinct Scottish ethnic communities divided by language and culture, and, at times, mutual antagonisms – Highlanders and Lowlanders. With regard to

4232-482: The best-known being James Wylie . The next wave of migration established commercial links with Russia. The 19th century witnessed the immense literary cross-references between Scotland and Russia. A Russian scholar, Maria Koroleva, distinguishes between 'the Russian Scots' (properly assimilated) and 'Scots in Russia', who remained thoroughly Scottish. There are several societies in contemporary Russia to unite

4324-481: The book was meant to give a true picture of life in the community in the early decades of the 20th century. By 1830, 15.11% of the colonies' total non-Aboriginal population were Scots, which increased by the middle of the century to 25,000, or 20–25% of the non-Aboriginal population. The Australian Gold Rush of the 1850s provided a further impetus for Scottish migration: in the 1850s 90,000 Scots immigrated to Australia, far more than other British or Irish populations at

4416-493: The descendants of emigrants, often Gaelic-speaking, from the Maritime Provinces of Canada , from the 1880s onward. Americans of Scottish descent outnumber the population of Scotland, where 4,459,071 or 88.09% of people identified as ethnic Scottish in the 2001 Census. In the 2013 American Community Survey 5,310,285 identified as Scottish and 2,976,878 as of Scots-Irish descent. Americans of Scottish descent outnumber

4508-652: The early days of steam use, the boiler horsepower was roughly comparable to the horsepower of engines fed by the boiler. The term "boiler horsepower" was originally developed at the Philadelphia Centennial Exhibition in 1876, where the best steam engines of that period were tested. The average steam consumption of those engines (per output horsepower) was determined to be the evaporation of 30 pounds (14 kg) of water per hour, based on feed water at 100 °F (38 °C), and saturated steam generated at 70 psi (480 kPa). This original definition

4600-518: The eastern seaboard of Scotland; the Scots congregating first in Campvere —where they were allowed to land their goods duty-free and run their own affairs—and then in Rotterdam , where Scottish and Dutch Calvinism coexisted comfortably. Besides the thousands (or, according to one estimate, over 1 million) of local descendants with Scots ancestry, both ports still show signs of these early alliances. Now

4692-432: The eighteenth century. In the 2000 census, 4.8 million Americans self-reported Scottish ancestry, 1.7% of the total U.S. population. Over 4.3 million self-reported Scotch-Irish ancestry, for a total of 9.2 million Americans self-reporting some kind of Scottish descent. Self-reported numbers are regarded by demographers as massive under-counts, because Scottish ancestry is known to be disproportionately under-reported among

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4784-522: The engine's bore size, number of cylinders, and a (now archaic) presumption of engine efficiency. As new engines were designed with ever-increasing efficiency, it was no longer a useful measure, but was kept in use by UK regulations, which used the rating for tax purposes . The United Kingdom was not the only country that used the RAC rating; many states in Australia used RAC hp to determine taxation. The RAC formula

4876-499: The engine. The situation persisted for several generations of four- and six-cylinder British engines: For example, Jaguar's 3.4-litre XK engine of the 1950s had six cylinders with a bore of 83 mm (3.27 in) and a stroke of 106 mm (4.17 in), where most American automakers had long since moved to oversquare (large bore, short stroke) V8 engines . See, for example, the early Chrysler Hemi engine . The power of an engine may be measured or estimated at several points in

4968-475: The famous Russian poet Mikhail Lermontov , called George Learmonth. A number of Scots gained wealth and fame in the times of Peter the Great and Catherine the Great . These include Admiral Thomas Gordon , Commander-in-Chief of Kronstadt , Patrick Gordon , Paul Menzies , Samuel Greig , Charles Baird , Charles Cameron , Adam Menelaws and William Hastie . Several doctors to the Russian court were from Scotland,

5060-734: The following: "The basic ethnic and cultural division in the British Isles has been that between the Anglo-Saxon peoples of England and the Scottish Lowlands and the Celtic peoples of Wales, Ireland and the Scottish Highlands. In 2014, historian Steven L. Danver, who specialises in indigenous ethnic research, wrote regarding Lowlands Scots and Gaelic Scots' unique ancestries: "The people of Scotland are divided into two groups - Lowland Scots in

5152-434: The horse could pull with a force of 180 pounds-force (800 N). So: Engineering in History recounts that John Smeaton initially estimated that a horse could produce 22,916 foot-pounds (31,070 J) per minute. John Desaguliers had previously suggested 44,000 foot-pounds (59,656 J) per minute, and Thomas Tredgold suggested 27,500 foot-pounds (37,285 J) per minute. "Watt found by experiment in 1782 that

5244-486: The implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit. The development of the steam engine provided a reason to compare the output of horses with that of the engines that could replace them. In 1702, Thomas Savery wrote in The Miner's Friend : The idea was later used by James Watt to help market his improved steam engine. He had previously agreed to take royalties of one-third of

5336-403: The limit. In that legend, Watt accepted the challenge and built a machine that was actually even stronger than the figure achieved by the brewer, and the output of that machine became the horsepower. In 1993, R. D. Stevenson and R. J. Wassersug published correspondence in Nature summarizing measurements and calculations of peak and sustained work rates of a horse. Citing measurements made at

5428-430: The majority of mixed ancestry, and because areas where people reported "American" ancestry were the places where, historically, Scottish and Scotch-Irish Protestants settled in North America (that is: along the North American coast, Appalachia , and the Southeastern United States ). Scottish Americans descended from nineteenth-century Scottish emigrants tend to be concentrated in the West, while many in New England are

5520-470: The model's sole operator. They were delivered to the NS in April 2015. In February 2020, following the beginning of COVID-19 pandemic , Norfolk Southern retired all 29 of its remaining SD80MACs, owing to their operational costs. Six units were sold to Canadian Pacific Kansas City (then Canadian Pacific Railway) as parts sources for their recent EMD SD70ACU rebuilds. The remainder of the NS fleet went to Progress Rail and were scrapped. As of January 2022,

5612-473: The night on Friday, 18 November 2016 when an electrical fire broke out in the cab of NS 7210 (CR 4118). There were no injuries, but the SD80MAC’s cab interior was completely destroyed. The unit was hauled to the Juniata Shops in Altoona where it was buried in a deadline until it was among the units that were sold off to Progress Rail. The unit met its end in December 2021. The technical details of this locomotive model are as follows: Horsepower The term

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5704-529: The nose, an identifying feature unique to Conrail (CR) locomotives, although Norfolk Southern (NS) had removed the lights on most of their former Conrail engines. All 30 SD80MAC units built were delivered to Conrail , and the 28 production units were completed, tested, and painted at the former Pennsylvania Railroad shops in Altoona, Pennsylvania . Prior to the 1995 merger with Union Pacific, Chicago and North Western Railway placed an order of 15 locomotives. Canadian Pacific placed an order as well but it

5796-412: The origin of the engine in question. DIN 66036 defines one metric horsepower as the power to raise a mass of 75 kilograms against the Earth's gravitational force over a distance of one metre in one second: 75 kg × 9.80665 m/s × 1 m / 1 s = 75  kgf ⋅m/s = 1 PS. This is equivalent to 735.49875 W, or 98.6% of an imperial horsepower. In 1972, the PS was replaced by

5888-442: The people, also known as the Gaels , in the Kingdom of Dál Riata, in the western edge of Scotland. Bede used the word natio (nation) for the Scots, where he often refers to other peoples, such as the Picts, with the word gens (race). In the 10th-century Anglo-Saxon Chronicle , the word Scot is mentioned as a reference to the "Land of the Gaels". The word Scottorum was again used by an Irish king in 1005: Imperator Scottorum

5980-427: The period spanning the 16th century to the 18th century, sociologist Ian Carter's research into marriage patterns found little intermarrying between the groups. Today, Scotland has a population of just over five million people, the majority of whom consider themselves Scottish. It is estimated around 40 million people worldwide claim Scottish ancestry, particularly in Australia , New Zealand , continental Europe ,

6072-415: The political practicalities of nation building . Academics have explored how 15th and 16th-century Scottish poets and orators, such as Blind Harry , constructed terms such as 'trew Scottis' in an effort to diminish differences between the ethnic groups living within Scotland in the popular consciousness. A 1974 International Political Science Association report defined this ethnic plurality in Scotland as

6164-515: The population of Scotland, where 4,459,071 or 88.09% of people identified as ethnic Scottish in the 2001 Census. The number of Americans with a Scottish ancestor is estimated to be between 9 and 25 million (up to 8.3% of the total US population), and "Scotch-Irish", 27 to 30 million (up to 10% of the total US population), but these subgroups overlap and are often not distinguishable. The majority of Scotch-Irish originally came from Lowland Scotland and Northern England before migrating to

6256-670: The power generated can be calculated. To determine the maximum power available, a controllable load is required; it is normally a second locomotive with its brakes applied, in addition to a static load. If the drawbar force ( F ) is measured in pounds-force (lbf) and speed ( v ) is measured in miles per hour (mph), then the drawbar power ( P ) in horsepower (hp) is { P } h p = { F } l b f { v } m p h 375 . {\displaystyle \{P\}_{\mathrm {hp} }={\frac {\{F\}_{\mathrm {lbf} }\{v\}_{\mathrm {mph} }}{375}}.} Example: How much power

6348-411: The preferred term is Scots . Many Scottish people find the term Scotch to be offensive when applied to people. The Oxford Dictionary describes Scotch as an old-fashioned term for "Scottish". In the Early Middle Ages , Scotland saw several ethnic or cultural groups mentioned in contemporary sources, namely the Picts , the Gaels , the Britons , and the Angles , with the last of these settling in

6440-399: The protection offered by King Stephen in the Royal Grant of 1576, a district in Kraków was assigned to Scottish immigrants. Records from 1592 mention Scots settlers who were granted citizenship of Kraków give their employment as traders or merchants. Fees for citizenship ranged from 12 Polish florins to a musket and gunpowder, or an undertaking to marry within a year and a day of acquiring

6532-621: The province of Ulster in Ireland (see Plantation of Ulster ) and thence, beginning about five generations later, to North America in large numbers during the 18th century. Several Presidents of the United States have claimed Scottish ancestry or Scotch-Irish ancestry, including James Monroe through his great-great-grandfather Patrick Andrew Monroe emigrated to America, Andrew Jackson , Theodore Roosevelt , Franklin D. Roosevelt , Harry S. Truman , Lyndon B. Johnson , Richard Nixon , Ronald Reagan , Bill Clinton , George W. Bush and Donald Trump , whose mother, Mary Anne MacLeod Trump ,

6624-538: The question and the numerous responses for "Canadian" do not give an accurate figure for numerous groups, particularly those of British Isles origins. Scottish-Canadians are the 3rd biggest ethnic group in Canada. Scottish culture has particularly thrived in the Canadian province of Nova Scotia ( Latin for "New Scotland"). There, in Cape Breton , where both lowland and highland Scots settled in large numbers, Canadian Gaelic

6716-408: The savings in coal from the older Newcomen steam engines . This royalty scheme did not work with customers who did not have existing steam engines but used horses instead. Watt determined that a horse could turn a mill wheel 144 times in an hour (or 2.4 times a minute). The wheel was 12 feet (3.7 m) in radius; therefore, the horse travelled 2.4 × 2π × 12 feet in one minute. Watt judged that

6808-423: The size of the engine; but as of 2000, many countries changed over to systems based on CO 2 emissions, so are not directly comparable to older ratings. The Citroën 2CV is named for its French fiscal horsepower rating, "deux chevaux" (2CV). Nameplates on electrical motors show their power output, not the power input (the power delivered at the shaft, not the power consumed to drive the motor). This power output

6900-569: The south-east of the country. King Edgar divided the Kingdom of Northumbria between Scotland and England; at least, most medieval historians now accept the 'gift' by Edgar. In any case, after the later Battle of Carham the Scottish kingdom encompassed many English people, with even more quite possibly arriving after the Norman invasion of England in 1066. South-east of the Firth of Forth , then in Lothian and

6992-552: The southeast of the country. Culturally, these peoples are grouped according to language. Most of Scotland until the 13th century spoke Celtic languages , and these included, at least initially, the Britons , as well as the Gaels and the Picts . Germanic peoples included the Angles of Northumbria , who settled in south-eastern Scotland in the region between the Firth of Forth to the north and

7084-468: The southern part of the country and Highland Scots in the north - that differ from one another ethnically, culturally, and linguistically ... Lowlanders differ from Highlanders in their ethnic origin. While Highland Scots are of Celtic (Gaelic) descent, Lowland Scots are descended from people of Germanic stock. During the seventh century C.E., settlers of Germanic tribes of Angles moved from Northumbria in present-day northern England and southeastern Scotland to

7176-567: The term Scotch has also been used for Scottish people, now primarily outwith Scotland. People of Scottish descent live in many countries. Emigration, influenced by factors such as the Highland and Lowland Clearances , Scottish emigration to various locales throughout the British Empire , and latterly industrial decline and unemployment, have resulted in the spread of Scottish languages and culture . Large populations of Scottish people settled

7268-709: The time. Literacy rates of the Scottish immigrants ran at 90–95%. By 1860, Scots made up 50% of the ethnic composition of Western Victoria , Adelaide , Penola and Naracoorte . Other settlements in New South Wales included New England , the Hunter Valley and the Illawarra . Much settlement followed the Highland Potato Famine , Highland Clearances and the Lowland Clearances of the mid-19th century. In

7360-502: The transmission of the power from its generation to its application. A number of names are used for the power developed at various stages in this process, but none is a clear indicator of either the measurement system or definition used. In general: All the above assumes that no power inflation factors have been applied to any of the readings. Engine designers use expressions other than horsepower to denote objective targets or performance, such as brake mean effective pressure (BMEP). This

7452-472: The wider New Zealand public. In so doing, the Games gave Scots a path to cultural integration as Scottish New Zealanders. In the 1961 census there were 47,078 people living in New Zealand who were born in Scotland; in the 2013 census there were 25,953 in this category. Many people of Scottish descent live in other parts of the United Kingdom. In Ulster particularly the colonial policies of James VI , known as

7544-452: The words Scot and Scottish are applied mainly to inhabitants of Scotland. The possible ancient Irish connotations are largely forgotten. The language known as Ulster Scots , spoken in parts of northeastern Ireland, is the result of 17th- and 18th-century immigration to Ireland from Scotland. In the English language, the word Scotch is a term to describe a thing from Scotland, such as Scotch whisky . However, when referring to people,

7636-555: The world and the second-largest population of Scottish descendants, after the United States. Originally the Romans used Scotia to refer to Ireland. The Venerable Bede ( c.  672 or 673 – 27 May, 735) uses the word Scottorum for the nation from Ireland who settled part of the Pictish lands: " Scottorum nationem in Pictorum parte recipit ." This can be inferred to mean the arrival of

7728-713: Was Gaelic-speaking into the 20th century, as were some small communities in parts of the Central Highlands). From 1200 to 1500, the Early Scots language spread across the lowland parts of Scotland between Galloway and the Highland line, being used by Barbour in his historical epic The Brus in the late 14th century in Aberdeen. From 1500 on, Scotland was commonly divided by language into two groups of people, Gaelic-speaking " Highlanders " (the language formerly called Scottis by English speakers and known by many Lowlanders in

7820-478: Was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses . It was later expanded to include the output power of other power-generating machinery such as piston engines , turbines , and electric motors . The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With

7912-535: Was born in Tong on the Isle of Lewis . As the third-largest ethnic group in Canada and amongst the first Europeans to settle in the country, Scottish people have made a large impact on Canadian culture since colonial times. According to the 2011 Census of Canada , the number of Canadians claiming full or partial Scottish descent is 4,714,970, or 15.10% of the nation's total population. Many respondents may have misunderstood

8004-555: Was changed to SD90MACs. Conrail planned a second order of SD80MACs, but its new owners changed the order to SD70s and SD70MACs, all of which would be built at the Juniata Shops in Altoona. Vale Mining of Brazil ordered a set of seven updated locomotives designated as the SD80ACe model. These locomotives feature Tier 1 compliant 20-710G3C-ES engines, with 5,300 HP (3.9MW) @ 950 RPM. The design

8096-531: Was instituted by the Royal Automobile Club and was used to denote the power of early 20th-century British cars. Many cars took their names from this figure (hence the Austin Seven and Riley Nine), while others had names such as "40/50 hp", which indicated the RAC figure followed by the true measured power. Taxable horsepower does not reflect developed horsepower; rather, it is a calculated figure based on

8188-475: Was named as a tribute to Edinburgh by the city's Scottish founders. Scottish migration to New Zealand dates back to the earliest period of European colonisation, with a large proportion of Pākehā New Zealanders being of Scottish descent. However, identification as "British" or "European" New Zealanders can sometimes obscure their origin. Many Scottish New Zealanders also have Māori or other non-European ancestry. The majority of Scottish immigrants settled on

8280-470: Was sometimes applied in British colonies as well, such as Kenya (British East Africa) . where Since taxable horsepower was computed based on bore and number of cylinders, not based on actual displacement, it gave rise to engines with "undersquare" dimensions (bore smaller than stroke), which tended to impose an artificially low limit on rotational speed , hampering the potential power output and efficiency of

8372-450: Was the title given to Brian Bóruma by his notary, Mael Suthain, in the Book of Armagh . This style was subsequently copied by the Scottish kings. Basileus Scottorum appears on the great seal of King Edgar (1074–1107). Alexander I ( c.  1078 –1124) used the words Rex Scottorum on his great seal, as did many of his successors up to and including James VI . In modern times,

8464-408: Was traditionally Gaelic-speaking but replaced with Doric in the 19th century. Today, immigrants have brought other languages, such as Polish , Punjabi and Urdu , but almost every adult throughout Scotland is fluent in the English language. Historian Susan Reynolds has put forward how, since the Middle Ages , there have been attempts to obfuscate the ethnic plurality of Scottish people due to

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