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 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
The Porsche 917 is a race car that gave Porsche its first overall wins at the 24 Hours of Le Mans in 1970 and 1971. The highest official speed ever clocked for a 917 at Le Mans is 362 km/h or 224.4 mph, there are at least eleven variants of the 917. The original version had a removable long tail/medium tail with rear wing flaps. The changes were adopted into a new version of the 917, called the Kurzheck, or short-tail. The 917K, and the special Le Mans long-tail version, dominated the 1970 and 1971 World Sportscar Championships. In 1971, a variant of the 917K appeared with an upswept tail and vertical fins. The fins kept the clean downforce inducing air on the top of the tail and allowed the angle of the deck to be reduced, the result was a more attractive looking car that maintained down force for less drag and higher top speed. By this time the original 4. 5-litre engine, which had produced around 520 bhp in 1969, had been enlarged through 4. 9-litres to 5-litres, the 917K models were generally used for the shorter road courses such as Sebring, Brands Hatch and Spa-Francorchamps.
The big prize for Porsche however, was Le Mans, for the French circuits long, high speed straights, the factory developed special long tail bodywork that was designed for minimum drag and thus highest maximum speed. On the cars debut in 1969, these models proved to be nearly uncontrollable as there was so little down force. In fact, they generated aerodynamic lift at the highest speeds, for 1970, an improved version was raced by the factory and for 1971, after very significant development in the wind tunnel, the definitive 917L was raced by both factory and JW. These cars were so stable that the drivers could take their hands off the wheel at speeds which reached 246 mph. In 1971 Jo Siffert raced an open-top 917PA Spyder in the 1971 CanAm series, there is the Pink Pig aerodynamic research version, and the turbocharged 917/10 and 917/30 CanAm Spyders. Porsche 917s raced in the European Interseries in various configurations, in the 1973 Can-Am series, the turbocharged version Porsche 917/30 developed 1,100 bhp.
The 917 is one of the most iconic racing cars of all time, largely for its high speeds and high power outputs. 2009 marked the 40th anniversary of the 917, and Porsche held a celebration at the Goodwood Festival of Speed. This capacity reduction would serve to entice manufacturers who were already building three-litre Formula One engines into endurance racing and this targeted existing cars like the aging Ford GT40 Mk. I and the newer Lola T70 coupe. With Ferrari absent in 1968, mainly Porsche 908s and Ford P68s were entered there, as a result, old 2. 2-litre Porsche 907s often won that category, with John Wyers 4. 7-litre Ford GT40 Mk. I taking wins at faster tracks
A spring is an elastic object used to store mechanical energy. Springs are usually out of spring steel. There are a number of spring designs, in everyday usage the term often refers to coil springs. When a spring is compressed or stretched from its resting position, the rate or spring constant of a spring is the change in the force it exerts, divided by the change in deflection of the spring. That is, it is the gradient of the force versus deflection curve, an extension or compression springs rate is expressed in units of force divided by distance, for example lbf/in or N/m. A torsion spring is a spring that works by twisting, when it is twisted about its axis by an angle, a torsion springs rate is in units of torque divided by angle, such as N·m/rad or ft·lbf/degree. The inverse of spring rate is compliance, that is, if a spring has a rate of 10 N/mm, the stiffness of springs in parallel is additive, as is the compliance of springs in series. Springs are made from a variety of materials, the most common being spring steel.
Small springs can be wound from pre-hardened stock, while larger ones are made from annealed steel, some non-ferrous metals are used including phosphor bronze and titanium for parts requiring corrosion resistance and beryllium copper for springs carrying electrical current. Simple non-coiled springs were used throughout history, e. g. the bow. In the Bronze Age more sophisticated spring devices were used, as shown by the spread of tweezers in many cultures, coiled springs appeared early in the 15th century, in door locks. The first spring powered-clocks appeared in that century and evolved into the first large watches by the 16th century, in 1676 British physicist Robert Hooke discovered Hookes law which states that the force a spring exerts is proportional to its extension. Compression spring – is designed to operate with a compression load, flat spring – this type is made of a flat spring steel. Machined spring – this type of spring is manufactured by machining bar stock with a lathe and/or milling operation rather than a coiling operation, since it is machined, the spring may incorporate features in addition to the elastic element.
Machined springs can be made in the load cases of compression/extension, torsion. Serpentine spring - a zig-zag of thick wire - often used in modern upholstery/furniture, the most common types of spring are, Cantilever spring – a spring which is fixed only at one end. Coil spring or helical spring – a spring is of two types, Tension or extension springs are designed to become longer under load and their turns are normally touching in the unloaded position, and they have a hook, eye or some other means of attachment at each end. Compression springs are designed to become shorter when loaded and their turns are not touching in the unloaded position, and they need no attachment points
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 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, 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
Sweden, officially the Kingdom of Sweden, is a Scandinavian country in Northern Europe. It borders Norway to the west and Finland to the east, at 450,295 square kilometres, Sweden is the third-largest country in the European Union by area, with a total population of 10.0 million. Sweden consequently has a low density of 22 inhabitants per square kilometre. Approximately 85% of the lives in urban areas. Germanic peoples have inhabited Sweden since prehistoric times, emerging into history as the Geats/Götar and Swedes/Svear, Southern Sweden is predominantly agricultural, while the north is heavily forested. Sweden is part of the area of Fennoscandia. The climate is in very mild for its northerly latitude due to significant maritime influence. Today, Sweden is a monarchy and parliamentary democracy, with a monarch as head of state. The capital city is Stockholm, which is the most populous city in the country, legislative power is vested in the 349-member unicameral Riksdag. Executive power is exercised by the government chaired by the prime minister, Sweden is a unitary state, currently divided into 21 counties and 290 municipalities.
Sweden emerged as an independent and unified country during the Middle Ages, in the 17th century, it expanded its territories to form the Swedish Empire, which became one of the great powers of Europe until the early 18th century. Swedish territories outside the Scandinavian Peninsula were gradually lost during the 18th and 19th centuries, the last war in which Sweden was directly involved was in 1814, when Norway was militarily forced into personal union. Since then, Sweden has been at peace, maintaining a policy of neutrality in foreign affairs. The union with Norway was peacefully dissolved in 1905, leading to Swedens current borders, though Sweden was formally neutral through both world wars, Sweden engaged in humanitarian efforts, such as taking in refugees from German-occupied Europe. After the end of the Cold War, Sweden joined the European Union on 1 January 1995 and it is a member of the United Nations, the Nordic Council, Council of Europe, the World Trade Organization and the Organisation for Economic Co-operation and Development.
Sweden maintains a Nordic social welfare system that provides health care. The modern name Sweden is derived through back-formation from Old English Swēoþēod and this word is derived from Sweon/Sweonas. The Swedish name Sverige literally means Realm of the Swedes, excluding the Geats in Götaland, the etymology of Swedes, and thus Sweden, is generally not agreed upon but may derive from Proto-Germanic Swihoniz meaning ones own, referring to ones own Germanic tribe
Royal Dutch Shell
Royal Dutch Shell plc, commonly known as Shell, is a British–Dutch multinational oil and gas company headquartered in the Netherlands and incorporated in the United Kingdom. It is one of the six oil and gas supermajors and the sixth-largest company in the world measured by 2016 revenues. Shell was first in the 2013 Fortune Global 500 list of the worlds largest companies and it has renewable energy activities in the form of biofuels and wind. Shell has operations in over 70 countries, produces around 3.7 million barrels of oil equivalent per day and has 44,000 service stations worldwide, as of 31 December 2014, Shell had total proved reserves of 13.7 billion barrels of oil equivalent. Shell Oil Company, its subsidiary in the United States, is one of its largest businesses. Shell holds 50% of Raízen, a joint venture with Cosan, which is the third-largest Brazil-based energy company by revenues, Shell was formed in 1907 through the amalgamation of the Royal Dutch Petroleum Company of the Netherlands and the Shell Transport and Trading Company of the United Kingdom.
Shell first entered the industry in 1929. In 1970 Shell acquired the mining company Billiton, which it sold in 1994. In recent decades gas exploration and production has become an important part of Shells business. Shell acquired BG Group in 2016, making it the worlds largest producer of liquefied natural gas, Shell has a primary listing on the London Stock Exchange and is a constituent of the FTSE100 Index. It has secondary listings on Euronext Amsterdam and the New York Stock Exchange, as of January 2013, Shells largest shareholder was Capital Research Global Investors with 9. 85% ahead of BlackRock in second with 6. 89%. Shells logo, known as the pecten, is one of the most familiar commercial symbols in the world and it was a move largely driven by the need to compete globally with Standard Oil. The Shell Transport and Trading Company was a British company, founded in 1897 by Marcus Samuel, 1st Viscount Bearsted, and his brother Samuel Samuel. Their father had owned a company in Houndsditch, London.
For various reasons, the new firm operated as a company, whereby the merging companies maintained their legal existence. The terms of the merger gave 60 percent ownership of the new group to the Dutch arm and 40 percent to the British, national patriotic sensibilities would not permit a full-scale merger or takeover of either of the two companies. The Dutch company, Koninklijke Nederlandsche Petroleum Maatschappij at The Hague, was in charge of production, the British Anglo-Saxon Petroleum Company was based in London, to direct the transport and storage of the products. During the First World War, Shell was the supplier of fuel to the British Expeditionary Force
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 the 21st-most populous country, with an estimated 65.1 million inhabitants, 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, Glasgow and Manchester.
The United Kingdom consists of four countries—England, Wales, the last three have devolved administrations, each with varying powers, based in their capitals, Edinburgh 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 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, military 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 and Northern Ireland have devolved self-government
Monocoque, structural skin, is a structural system where loads are supported through an objects external skin, similar to an egg shell. The word monocoque is a French term for single shell or single hull, a true monocoque carries both tensile and compressive forces within the skin and can be recognised by the absence of a load carrying internal frame. By contrast, a semi-monocoque is a combining a tensile stressed skin. Other semi-monocoques not to be confused with true monocoques include vehicle unibodies, which tend to be composites, early aircraft were constructed using frames, typically of wood or steel tubing, which could be covered with fabric such as irish linen or cotton. The skin added nothing to the strength of the airframe and was dead weight beyond providing a smooth sealed surface. This reduced drag so effectively it was able to win most of the races it was entered into, however, it was prone to damage from moisture and delamination. While all metal aircraft from the Junkers firm had appeared as early as 1915, the first metal monocoques were built by Claudius Dornier, while working for Zeppelin-Lindau.
After failed attempts with several large flying boats in which a few components were monocoques, the aluminum alloy monocoque chassis was first used in the 1962 Lotus 25 Formula 1 race car. The term monocoque is frequently misused when referring to unibody cars, in motor racing, the safety of the driver depends on the car body which must meet stringent regulations and a few cars have been built with monocoque structures. Tanks and other armored vehicles such as the German Fuchs 2 and this reduces weight for a given amount of armor compared to vehicles to which armor has been attached to an underlying frame. A monocoque-framed motorcycle was developed by the Spanish motorcycle manufacturer, Ossa won four Grand Prix races with the monocoque bike before their rider was killed during the 1970 Isle of Man TT, causing the Ossa factory to withdraw from Grand Prix competition. Notable designers such as Eric Offenstadt and Dan Hanebrink created unique monocoque designs in the early 1970s, the 1973 Isle of Man TT was won by Peter Williams on the monocoque-framed Norton John Player Special that he helped design.
Honda experimented with a monocoque Grand Prix racing motorcycle named the NR500 in 1979, in 1987 John Britten developed the Aero-D One, featuring a composite monocoque chassis that weighed only 12 kg. The first time an aluminium monocoque frame appeared on a production motorcycle was the 2000 Kawasaki Ninja ZX-12R. This was Kawasakis flagship production sportbike aimed at being the fastest production motorcycle, various rockets have used pressure-stabilized monocoque designs, such as Atlas and Falcon 1. Balloon tanks are not true monocoques but act in the way as inflatable shells. A balloon tank skin only handles tensile forces while compression is resisted by internal pressure in a way similar to semi-monocoques braced by a solid frame. This becomes obvious when internal pressure is lost and the structure collapses, the Handle is an electric guitar characterized by its hollow sectioned monocoque chassis, created by the award-winning designer Peter Solomon
Firestone Tire and Rubber Company
Firestone soon saw the huge potential for marketing tires for automobiles. The company was a pioneer in the production of tires. Harvey Firestone had a friendship with Henry Ford, Firestone used this relationship to become the original equipment supplier of Ford Motor Company automobiles, and was active in the replacement market. In 1988, the company was sold to the Japanese Bridgestone Corporation, Firestone was originally based in Akron, the hometown of its archrival, Goodyear Tire and Rubber Company, and another two mid-sized competitors, General Tire and Rubber and BF Goodrich. Founded on August 3,1900, the company initiated operations with 12 employees, together and Goodyear were the largest suppliers of automotive tires in North America for over 75 years. In 1906 Henry Ford chose Firestone for Model T original equipment tires, in 1918, Firestone Tire and Rubber Company of Canada was incorporated in Hamilton, Ontario and in 1922, the first Canadian-made tire rolled off the line on September 15.
During the 1920s, Firestone produced the Oldfield tire, named for racing driver Barney Oldfield, in 1926, the company opened one of the worlds biggest rubber plantations in Liberia, West Africa, spanning more than 1 million acres. 1926 was the year that the company opened its first Firestone Complete Auto Care store, in 1927, Henry Ford and tire maven Harvey Firestone took a trip to Los Angeles to select locations for their new factories. Friends say Ford wanted to be near the ocean and picked Long Beach and suggested Firestone go to South Gate, the tiny community southeast of Downtown was mostly agriculture at the time and Firestone found 40 acres of beanfield to house his new manufacturing plant. A year after the plant opened in 1928 it doubled in size, by 1954, when they added the Corporal guided missile to their offerings, the plant was nearly a million square feet. The town grew around Firestone, they named the main boulevard through town after Harvey, by the mid-1970s Ford and GM had massive layoffs as Firestone and other manufacturers opened new plants in non-union locales like Wilson, North Carolina.
After much downsizing the end came in 1980 when 1,300 workers were laid off, east Los Angeles College has proposed a new satellite campus at the site. In 1928 the company built a factory in Brentford, England, in 1936 the company opened a plant in Memphis, Tennessee. With a work force exceeding 3,000 employees, the Memphis plant was the largest tire manufacturer in the companys worldwide operation, on July 1,1963, the company celebrated the production of 100 million tires in Memphis. The plant was closed in 1982, during World War II the company was called on by the U. S. Government to make artillery shells, aluminum kegs for food transport and rubberized military products. Firestone ranked 55th among United States corporations in the value of World War II military production contracts, in the 1940s, Firestone was given a defense contract to produce plastic helmet liners. While outproduced by Westinghouse Electric they still made a fair amount for the M1 Helmet, in 1951, Firestone was given the defense contract for the MGM-5 Corporal missile.
Firestone was given a total of US$6,888,796 for the first 200 Missiles and this missile was known as the Embryo of the Army and was a surface-to-surface guided missile which could deliver a high-explosive warhead up to 75 nautical miles
As a racing driver, Reutemann was among Formula Ones leading protagonists between 1972 and 1982. He scored 12 Grand Prix wins and six pole positions, in 1981 he finished second in the World Drivers Championship by one point, having been overtaken in the last race of the season. He became the second Formula One driver after Leo Kinnunen to be at the podium of a World Rally Championship event, when he finished third in the 1980 and 1985 editions of Rally Argentina. He was for three decades the only Formula One driver to score championship points in both F1 and WRC, until Kimi Räikkönens eighth place at the 2010 Jordan Rally. He first raced in 1965 in a Fiat saloon car, after racing touring cars and Formula 2 in Argentina, he moved to Europe in 1970 to drive a Brabham for the Automobile Club of Argentina Team in the European Formula 2 series. He immediately received attention when he took out Austrian Formula One driver Jochen Rindt on the first lap of his first race at Hockenheim, the next season, he finished a close second in the series to Swedens Ronnie Peterson.
Brabham F1 team boss Bernie Ecclestone signed Reutemann to drive alongside veteran, at the first race, in front of his home crowd at Buenos Aires for his first Grand Prix, Reutemann qualified his Brabham BT34 on pole position. This was a previously performed only by Mario Andretti, and since matched only by Jacques Villeneuve. He finished the race in seventh after having to pit to replace his soft tyres, teamed with Brazilian Wilson Fittipaldi Júnior for the 1973 season, Reutemann scored two podium finishes and seventh in the Drivers Championship. For 1974, the Gordon Murray-designed Brabham BT44 was a vast improvement, Reutemann took the first three victories of his F1 career at South Africa and the United States. Though he matched Drivers Champion Emerson Fittipaldis win total, inconsistent performances in the races left Reutemann sixth in the season standings. Five podium finishes in 1975, including a win in Germany at the old Nürburgring, the Brabham team switched to the Alfa Romeo flat-12 engine for 1976 and suffered from serious reliability problems.
Laudas unexpected speedy recovery resulted in Reutemann racing only once for the team, in a car at Monza. For the 1977 Ferrari opted to keep the now fully recovered Lauda and have Reutemann replacing Clay Regazzoni, in the first two races, Reutemann finished third in Argentina and won in Brazil, outdriving Lauda in both events, and taking the Championship lead. Over the course of the season, Lauda reaffirmed his position as team leader, Lauda won his second Championship, while Reutemann finished fourth. When Lauda moved to Brabham in 1978, Reutemann became the member of the Ferrari team. Reutemann used the Ferrari 312T2 to win in Brazil, and a 312T3 to win in Britain, the Lotus team was dominant once their new model 79 was introduced at Monaco, and Reutemann finished a close third in the points standings behind Andretti and Peterson. With an opening at Lotus in 1979 after the death of Ronnie Peterson, after four podiums and six points finishes in the first seven races, Reutemann ended up finishing in only seventh place for the season
A tire or tyre is a ring-shaped vehicle component that covers the wheels rim to protect it and enable better vehicle performance. Most tires, such as those for automobiles and bicycles, provide traction between the vehicle and the road providing a flexible cushion that absorbs shock. The materials of modern tires are synthetic rubber, natural rubber and wire, along with carbon black. They consist of a tread and a body, the tread provides traction while the body provides containment for a quantity of compressed air. Before rubber was developed, the first versions of tires were bands of metal fitted around wooden wheels to prevent wear and tear. Pneumatic tires are used on many types of vehicles, including cars, motorcycles, trucks, heavy equipment, and aircraft. Metal tires are used on locomotives and railcars, and solid rubber tires are still used in various non-automotive applications, such as some casters, lawnmowers. The etymology of tire is that the word is a form of attire. The spelling tyre does not appear until the 1840s when the English began shrink fitting railway car wheels with malleable iron, traditional publishers continued using tire.
The Times newspaper in Britain was still using tire as late as 1905, the spelling tyre began to be commonly used in the 19th century for pneumatic tires in the UK. However, over the course of the 20th century, tyre became established as the standard British spelling, the earliest tires were bands of leather, placed on wooden wheels, used on carts and wagons. The tire would be heated in a fire, placed over the wheel and quenched, causing the metal to contract. A skilled worker, known as a wheelwright, carried out this work, the outer ring served to tie the wheel segments together for use, providing a wear-resistant surface to the perimeter of the wheel. The word tire thus emerged as a variant spelling to refer to the bands used to tie wheels. The first patent for what appears to be a standard pneumatic tire appeared in 1847 lodged by the Scottish inventor Robert William Thomson, this never went into production. The first practical pneumatic tire was made in 1888 on May Street, Belfast, by Scots-born John Boyd Dunlop and it was an effort to prevent the headaches of his 10-year-old son Johnnie, while riding his tricycle on rough pavements.
His doctor, Sir John Fagan, had prescribed cycling as an exercise for the boy, Fagan participated in designing the first pneumatic tires. In Dunlops tire patent specification dated 31 October 1888, his interest is only in its use in cycles, in September 1890, he was made aware of an earlier development but the company kept the information to itself
Brazil, officially the Federative Republic of Brazil, is the largest country in both South America and Latin America. As the worlds fifth-largest country by area and population, it is the largest country to have Portuguese as an official language. Its Amazon River basin includes a vast tropical forest, home to wildlife, a variety of ecological systems. This unique environmental heritage makes Brazil one of 17 megadiverse countries, Brazil was inhabited by numerous tribal nations prior to the landing in 1500 of explorer Pedro Álvares Cabral, who claimed the area for the Portuguese Empire. Brazil remained a Portuguese colony until 1808, when the capital of the empire was transferred from Lisbon to Rio de Janeiro, in 1815, the colony was elevated to the rank of kingdom upon the formation of the United Kingdom of Portugal and the Algarves. Independence was achieved in 1822 with the creation of the Empire of Brazil, a state governed under a constitutional monarchy. The ratification of the first constitution in 1824 led to the formation of a bicameral legislature, the country became a presidential republic in 1889 following a military coup détat.
An authoritarian military junta came to power in 1964 and ruled until 1985, Brazils current constitution, formulated in 1988, defines it as a democratic federal republic. The federation is composed of the union of the Federal District, the 26 states, Brazils economy is the worlds ninth-largest by nominal GDP and seventh-largest by GDP as of 2015. A member of the BRICS group, Brazil until 2010 had one of the worlds fastest growing economies, with its economic reforms giving the country new international recognition. Brazils national development bank plays an important role for the economic growth. Brazil is a member of the United Nations, the G20, BRICS, Mercosul, Organization of American States, Organization of Ibero-American States, CPLP. Brazil is a power in Latin America and a middle power in international affairs. One of the worlds major breadbaskets, Brazil has been the largest producer of coffee for the last 150 years and it is likely that the word Brazil comes from the Portuguese word for brazilwood, a tree that once grew plentifully along the Brazilian coast.
In Portuguese, brazilwood is called pau-brasil, with the word brasil commonly given the etymology red like an ember, formed from Latin brasa and the suffix -il. As brazilwood produces a red dye, it was highly valued by the European cloth industry and was the earliest commercially exploited product from Brazil. The popular appellation eclipsed and eventually supplanted the official Portuguese name, early sailors sometimes called it the Land of Parrots. In the Guarani language, a language of Paraguay, Brazil is called Pindorama