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147-406: As steamships were less dependent on wind patterns, new trade routes opened up. The steamship has been described as a "major driver of the first wave of trade globalization (1870–1913)" and contributor to "an increase in international trade that was unprecedented in human history". Steamships were preceded by smaller vessels, called steamboats , conceived in the first half of the 18th century, with

294-511: A Land Rover , the drive shaft to the front axle is noticeably shorter and more steeply articulated than the rear shaft, making it a more difficult engineering problem to build a reliable drive shaft, and which may involve a more sophisticated form of universal joint. Modern light cars with all-wheel drive (notably Audi or the Fiat Panda ) may use a system that more closely resembles a front-wheel drive layout. The transmission and final drive for

441-402: A chain-drive in bicycles for the past century, never becoming very popular. A shaft-driven bicycle (or "Acatène", from an early maker) has several advantages and disadvantages: Drive shafts are one method of transferring power from an engine and PTO to vehicle-mounted accessory equipment, such as an air compressor . Drive shafts are used when there is not enough space beside the engine for

588-409: A computer without regard to location. This included accounting, software development, and engineering design. Student exchange programs became popular after World War II , and are intended to increase the participants' understanding and tolerance of other cultures, as well as improving their language skills and broadening their social horizons. Between 1963 and 2006 the number of students studying in

735-402: A continuum with the local, national and regional. At one end of the continuum lie social and economic relations and networks which are organized on a local and/or national basis; at the other end lie social and economic relations and networks which crystallize on the wider scale of regional and global interactions. Globalization can refer to those spatial-temporal processes of change which underpin

882-438: A day when travelling at 13 knots (24 km/h; 15 mph). Her maiden outward voyage to Melbourne took 42 days, with one coaling stop, carrying 4,000 tons of cargo. Other similar ships were rapidly brought into service over the next few years. By 1885 the usual boiler pressure was 150 pounds per square inch (1,000 kPa) and virtually all ocean-going steamships being built were ordered with triple expansion engines. Within

1029-559: A demonstration project for the potential use of nuclear energy. Thousands of Liberty Ships (powered by steam piston engines) and Victory Ships (powered by steam turbine engines) were built in World War II. A few of these survive as floating museums and sail occasionally: SS  Jeremiah O'Brien , SS  John W. Brown , SS  American Victory , SS  Lane Victory , and SS  Red Oak Victory . A steam turbine ship can be either direct propulsion (the turbines, equipped with

1176-429: A drive shaft is used to transfer a certain speed or torque from the internal combustion engine to a dynamometer . A "shaft guard" is used at a shaft connection to protect against contact with the drive shaft and for detection of a shaft failure. At a transmission test stand a drive shaft connects the prime mover with the transmission. An automotive drive shaft can typically last about 120,000 kilometres. However, if

1323-401: A drive shaft. In 1899, Bukey used the term to describe the shaft transmitting power from the wheel to the driven machinery by a universal joint in his Horse-Power . In the same year, Clark described his Marine Velocipede using the term to refer to the gear-driven shaft transmitting power through a universal joint to the propeller shaft. Crompton used the term to refer to the shaft between

1470-430: A few further experiments until SS  Aberdeen  (1881) went into service on the route from Britain to Australia. Her triple expansion engine was designed by Dr A C Kirk, the engineer who had developed the machinery for Propontis . The difference was the use of two double ended Scotch type steel boilers, running at 125 pounds per square inch (860 kPa). These boilers had patent corrugated furnaces that overcame

1617-546: A few years, new installations were running at 200 pounds per square inch (1,400 kPa). The tramp steamers that operated at the end of the 1880s could sail at 9 knots (17 km/h; 10 mph) with a fuel consumption of 0.5 ounces (14 g) of coal per ton mile travelled. This level of efficiency meant that steamships could now operate as the primary method of maritime transport in the vast majority of commercial situations. In 1890, steamers constituted 57% of world's tonnage, and by World War I their share raised to 93%. By 1870

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1764-468: A foreign country increased 9 times. Since the 1980s, modern globalization has spread rapidly through the expansion of capitalism and neoliberal ideologies. The implementation of neoliberal policies has allowed for the privatization of public industry, deregulation of laws or policies that interfered with the free flow of the market, as well as cut-backs to governmental social services. These neoliberal policies were introduced to many developing countries in

1911-473: A given distance, but fewer firemen were needed to fuel the boilers, so crew costs and their accommodation space were reduced. Agamemnon was able to sail from London to China with a coaling stop at Mauritius on the outward and return journey, with a time on passage substantially less than the competing sailing vessels. Holt had already ordered two sister ships to Agamemnon by the time she had returned from her first trip to China in 1866, operating these ships in

2058-503: A head wind, most notably against the southwest monsoon when returning with a cargo of new tea. Though the auxiliary steamers persisted in competing in far eastern trade for a few years (and it was Erl King that carried the first cargo of tea through the Suez Canal ), they soon moved on to other routes. What was needed was a big improvement in fuel efficiency. While the boilers for steam engines on land were allowed to run at high pressures,

2205-403: A long bush of soft metal was fitted in the after end of the stern tube. SS  Great Eastern had this arrangement fail on her first transatlantic voyage, with very large amounts of uneven wear. The problem was solved with a lignum vitae water-lubricated bearing, patented in 1858. This became standard practice and is in use today. Since the motive power of screw propulsion is delivered along

2352-493: A number of inventions such as the screw propeller , the compound engine , and the triple-expansion engine made trans-oceanic shipping on a large scale economically viable. In 1870 the White Star Line ’s RMS  Oceanic set a new standard for ocean travel by having its first-class cabins amidships, with the added amenity of large portholes, electricity and running water. The size of ocean liners increased from 1880 to meet

2499-457: A particularly compact compound engine and taken great care with the hull design, producing a light, strong, easily driven hull. The efficiency of Holt's package of boiler pressure, compound engine and hull design gave a ship that could steam at 10 knots on 20 long tons of coal a day. This fuel consumption was a saving from between 23 and 14 long tons a day, compared to other contemporary steamers. Not only did less coal need to be carried to travel

2646-673: A positive or a negative phenomenon. Economic globalization comprises: globalization of production; which refers to the obtainment of goods and services from a particular source from locations around the globe to benefit from difference in cost and quality. Likewise, it also comprises globalization of markets; which is defined as the union of different and separate markets into a massive global marketplace. Economic globalization also includes competition, technology, and corporations and industries. Current globalization trends can be largely accounted for by developed economies integrating with less developed economies by means of foreign direct investment ,

2793-406: A ratchet handle similar to a car's hand brake or parking brake , as opposed to an air brake button or lever. Risk factors for drivers include parking on a steep slope when heavily loaded, not applying the brake with enough force, changing the load or load balance while parked on a slope, or parking where one side of the vehicle is able to slip. Using chocks on the wheels is one way of preventing

2940-468: A rear-mounted transaxle . In some non-Porsche models, this places the clutch and transmission at the rear of the car and the drive shaft between them and the engine. In this case the drive shaft rotates continuously with the engine, even when the car is stationary and out of gear. However, the Porsche 924/944/928 models have the clutch mounted to the back of the engine in a bell housing and the drive shaft from

3087-467: A reduction gear, rotate directly the propellers), or turboelectric (the turbines rotate electric generators, which in turn feed electric motors operating the propellers). While steam turbine-driven merchant ships such as the Algol -class cargo ships (1972–1973), ALP Pacesetter-class container ships (1973–1974) and very large crude carriers were built until the 1970s, the use of steam for marine propulsion in

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3234-426: A sailing vessel. The steam engine would only be used when conditions were unsuitable for sailing – in light or contrary winds. Some of this type (for instance Erl King ) were built with propellers that could be lifted clear of the water to reduce drag when under sail power alone. These ships struggled to be successful on the route to China, as the standing rigging required when sailing was a handicap when steaming into

3381-662: A series of agreements to remove trade restrictions. GATT's successor was the World Trade Organization (WTO), which provided a framework for negotiating and formalizing trade agreements and a dispute resolution process. Exports nearly doubled from 8.5% of total gross world product in 1970 to 16.2% in 2001. The approach of using global agreements to advance trade stumbled with the failure of the Doha Development Round of trade negotiation. Many countries then shifted to bilateral or smaller multilateral agreements, such as

3528-399: A shaft that is positioned above the waterline, with the cylinders positioned below the shaft. SS  Great Britain used chain drive to transmit power from a paddler's engine to the propeller shaft – the result of a late design change to propeller propulsion. An effective stern tube and associated bearings were required. The stern tube contains the propeller shaft where it passes through

3675-413: A state is not dependent on another, then there is no way for either state to be mutually affected by the other. This is one of the driving forces behind global connections and trade; without either, globalization would not have emerged the way it did and states would still be dependent on their own production and resources to work. This is one of the arguments surrounding the idea of early globalization. It

3822-571: A stateless corporation. A free-trade area is the region encompassing a trade bloc whose member countries have signed a free-trade agreement (FTA). Such agreements involve cooperation between at least two countries to reduce trade barriers – import quotas and tariffs  – and to increase trade of goods and services with each other. Propeller shaft A drive shaft , driveshaft , driving shaft , tailshaft ( Australian English ), propeller shaft ( prop shaft ), or Cardan shaft (after Girolamo Cardano )

3969-520: A third of the world's human population—have used the services of the Internet. Growth of globalization has never been smooth. One influential event was the late 2000s recession , which was associated with lower growth (in areas such as cross-border phone calls and Skype usage) or even temporarily negative growth (in areas such as trade) of global interconnectedness. The China–United States trade war , starting in 2018, negatively affected trade between

4116-485: A transformation in the organization of human affairs by linking together and expanding human activity across regions and continents. Without reference to such expansive spatial connections, there can be no clear or coherent formulation of this term. ... A satisfactory definition of globalization must capture each of these elements: extensity (stretching), intensity, velocity and impact. Held and his co-writers' definition of globalization in that same book as "transformation in

4263-438: Is a component for transmitting mechanical power , torque , and rotation, usually used to connect other components of a drivetrain that cannot be connected directly because of distance or the need to allow for relative movement between them. As torque carriers, drive shafts are subject to torsion and shear stress , equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear

4410-405: Is agency-extended globalization, the circulation of agents of different institutions, organizations, and polities , including imperial agents. Object-extended globalization, a third form, is the movement of commodities and other objects of exchange. He calls the transmission of ideas, images, knowledge, and information across world-space disembodied globalization, maintaining that it is currently

4557-461: Is argued that archaic globalization did not function in a similar manner to modern globalization because states were not as interdependent on others as they are today. Also posited is a "multi-polar" nature to archaic globalization, which involved the active participation of non-Europeans. Because it predated the Great Divergence in the nineteenth century, where Western Europe pulled ahead of

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4704-450: Is filled with a range of norms , claims, beliefs, and narratives about the phenomenon itself. James and Steger stated that the concept of globalization "emerged from the intersection of four interrelated sets of ' communities of practice ' ( Wenger , 1998): academics, journalists, publishers/editors, and librarians." They note the term was used "in education to describe the global life of the mind"; in international relations to describe

4851-404: Is known as the tail shaft. The Shay , Climax and Heisler locomotives, all introduced in the late 19th century, used quill drives to couple power from a centrally mounted multi-cylinder engine to each of the trucks supporting the engine. On each of these geared steam locomotives , one end of each drive shaft was coupled to the driven truck through a universal joint while the other end

4998-434: Is needed to turn the power 90° from the shaft to the rear wheel, losing some power in the process. BMW has produced shaft drive motorcycles since 1923; and Moto Guzzi have built shaft-drive V-twins since the 1960s. The British company, Triumph and the major Japanese brands, Honda , Suzuki , Kawasaki and Yamaha , have produced shaft drive motorcycles. Lambretta motorscooters type A up to type LD are shaft-driven

5145-399: Is the process of interaction and integration among people, companies, and governments worldwide. The term globalization first appeared in the early 20th century (supplanting an earlier French term mondialisation ), developed its current meaning sometime in the second half of the 20th century, and came into popular use in the 1990s to describe the unprecedented international connectivity of

5292-460: Is the propeller shaft that serves to transmit the drive force generated by the engine to the axles. Several different types of drive shaft are used in the automotive industry: The slip-in-tube drive shaft is a new type that improves crash safety. It can be compressed to absorb energy in the event of a crash, so is also known as a "collapsible drive shaft". These evolved from the front-engine rear-wheel drive layout. A new form of transmission called

5439-409: Is used to refer to the fear of globalization, though it can also mean the fear of balloons . There are both distal and proximate causes which can be traced in the historical factors affecting globalization. Large-scale globalization began in the 19th century. Archaic globalization conventionally refers to a phase in the history of globalization including globalizing events and developments from

5586-876: The Atlantic Ocean . The first sea-going steamboat was Richard Wright's first steamboat Experiment , an ex-French lugger ; she steamed from Leeds to Yarmouth in July 1813. The first iron steamship to go to sea was the 116-ton Aaron Manby , built in 1821 by Aaron Manby at the Horseley Ironworks , and became the first iron-built vessel to put to sea when she crossed the English Channel in 1822, arriving in Paris on 22 June. She carried passengers and freight to Paris in 1822 at an average speed of 8 knots (9 mph, 14 km/h). The American ship SS  Savannah first crossed

5733-515: The Board of Trade (under the authority of the Merchant Shipping Act 1854 ) would not allow ships to exceed 20 or 25 pounds per square inch (140 or 170 kPa). Compound engines were a known source of improved efficiency – but generally not used at sea due to the low pressures available. Carnatic (1863) , a P&O ship, had a compound engine – and achieved better efficiency than other ships of

5880-453: The Cold War (eg. Russian aircraft carrier Admiral Kuznetsov ), because of needs of high power and speed, although from 1970s they were mostly replaced by gas turbines . Large naval vessels and submarines continue to be operated with steam turbines, using nuclear reactors to boil the water. NS Savannah , was the first nuclear-powered cargo-passenger ship, and was built in the late 1950s as

6027-734: The East . Without the spread of traditional ideas from the East, Western globalization would not have emerged the way it did. The interactions of states were not on a global scale and most often were confined to Asia, North Africa , the Middle East , and certain parts of Europe. With early globalization, it was difficult for states to interact with others that were not close. Eventually, technological advances allowed states to learn of others' existence and thus another phase of globalization can occur. The third has to do with inter-dependency, stability, and regularity. If

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6174-677: The East Coast to the West Coast of the United States began on 28 February 1849, with the arrival of SS  California in San Francisco Bay . The California left New York Harbor on 6  October 1848, rounded Cape Horn at the tip of South America, and arrived at San Francisco, California, after a four-month and 21-day journey. The first steamship to operate on the Pacific Ocean was

6321-512: The Great Recession . New opposing views from some economists have argued such trends are a result of price drops and in actuality, trade volume is increasing, especially with agricultural products, natural resources and refined petroleum. Economic globalization is the increasing economic interdependence of national economies across the world through a rapid increase in cross- border movement of goods, services, technology, and capital. Whereas

6468-604: The Indus Valley civilization in the third millennium BCE . This archaic globalization existed during the Hellenistic Age , when commercialized urban centers enveloped the axis of Greek culture that reached from India to Spain, including Alexandria and the other Alexandrine cities. Early on, the geographic position of Greece and the necessity of importing wheat forced the Greeks to engage in maritime trade. Trade in ancient Greece

6615-940: The International Monetary Fund (IMF) identified four basic aspects of globalization: trade and transactions , capital and investment movements, migration and movement of people, and the dissemination of knowledge. Globalizing processes affect and are affected by business and work organization, economics, sociocultural resources, and the natural environment. Academic literature commonly divides globalization into three major areas: economic globalization , cultural globalization , and political globalization . Proponents of globalization point to economic growth and broader societal development as benefits, while opponents claim globalizing processes are detrimental to social well-being due to ethnocentrism , environmental consequences, and other potential drawbacks. Between 1990 and 2010, globalisation progressed rapidly, driven by

6762-492: The International Organization for Standardization , which is composed of representatives from various national standards organizations . A multinational corporation , or worldwide enterprise, is an organization that owns or controls the production of goods or services in one or more countries other than their home country. It can also be referred to as an international corporation, a transnational corporation, or

6909-572: The Mediterranean and then through the Red Sea . While this worked for passengers and some high value cargo, sail was still the only solution for virtually all trade between China and Western Europe or East Coast America. Most notable of these cargoes was tea , typically carried in clippers . Another partial solution was the Steam Auxiliary Ship – a vessel with a steam engine, but also rigged as

7056-694: The Thirty Years' War , and demand for commodities, most particularly slaves . The triangular trade made it possible for Europe to take advantage of resources within the Western Hemisphere . The transfer of animal stocks, plant crops, and epidemic diseases associated with Alfred W. Crosby 's concept of the Columbian exchange also played a central role in this process. European, Middle Eastern, Indian, Southeast Asian , and Chinese merchants were all involved in early modern trade and communications, particularly in

7203-511: The University of Aberdeen and an early writer in the field, described globalization as "the compression of the world and the intensification of the consciousness of the world as a whole." In Global Transformations , David Held and his co-writers state: Although in its simplistic sense globalization refers to the widening, deepening and speeding up of global interconnection, such a definition begs further elaboration. ... Globalization can be on

7350-534: The developing countries and least developed countries (LDCs). As economic integration intensified workers moved to areas with higher wages and most of the developing world oriented toward the international market economy. The collapse of the Soviet Union not only ended the Cold War's division of the world – it also left the United States its sole policeman and an unfettered advocate of free market. It also resulted in

7497-411: The history of globalization , and of modern globalization. Economically, globalization involves goods, services , data, technology, and the economic resources of capital . The expansion of global markets liberalizes the economic activities of the exchange of goods and funds. Removal of cross-border trade barriers has made the formation of global markets more feasible. Advances in transportation, like

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7644-412: The hull . The thrust, the axial force generated by the propeller, is transmitted to the vessel by the thrust block or thrust bearing, which, in all but the smallest of boats, is incorporated in the main engine or gearbox. Shafts can be made of stainless steel or composite materials depending on what type of ship will install them. The portion of the drive train which connects directly to the propeller

7791-488: The post–Cold War world . Its origins can be traced back to 18th and 19th centuries due to advances in transportation and communications technology . This increase in global interactions has caused a growth in international trade and the exchange of ideas, beliefs, and culture. Globalization is primarily an economic process of interaction and integration that is associated with social and cultural aspects. However, disputes and international diplomacy are also large parts of

7938-696: The reciprocating steam engine , and was far easier to control. Diesel engines also required far less supervision and maintenance than steam engines, and as an internal combustion engine it did not need boilers or a water supply, therefore was more space efficient and cheaper to build. The Liberty ships were the last major steamship class equipped with reciprocating engines. The last Victory ships had already been equipped with marine diesels, and diesel engines superseded both steamers and windjammers soon after World War Two. Most steamers were used up to their maximum economical life span, and no commercial ocean-going steamers with reciprocating engines have been built since

8085-513: The steam locomotive , steamship , jet engine , and container ships , and developments in telecommunication infrastructure such as the telegraph , the Internet , mobile phones , and smartphones , have been major factors in globalization and have generated further interdependence of economic and cultural activities around the globe. Though many scholars place the origins of globalization in modern times , others trace its history to long before

8232-407: The transfer case was placed between transmission and final drives in both axles. This split the drive to the two axles and may also have included reduction gears, a dog clutch or differential. At least two drive shafts were used, one from the transfer case to each axle. In some larger vehicles, the transfer box was centrally mounted and was itself driven by a short drive shaft. In vehicles the size of

8379-537: The 17th century, world trade developed further when chartered companies like the British East India Company (founded in 1600) and the Dutch East India Company (founded in 1602, often described as the first multinational corporation in which stock was offered) were established. An alternative view from historians Dennis Flynn and Arturo Giraldez, postulated that: globalization began with

8526-401: The 1960s. Most steamships today are powered by steam turbines . After the demonstration by British engineer Charles Parsons of his steam turbine-driven yacht, Turbinia , in 1897, the use of steam turbines for propulsion quickly spread. The Cunard RMS Mauretania , built in 1906 was one of the first ocean liners to use the steam turbine (with a late design change shortly before her keel

8673-422: The 1980s and 1990s. The revolutions of 1989 and subsequent liberalization in many parts of the world resulted in a significant expansion of global interconnectedness. The migration and movement of people can also be highlighted as a prominent feature of the globalization process. In the period between 1965 and 1990, the proportion of the labor force migrating approximately doubled. Most migration occurred between

8820-489: The 19th century, steamships reduced the cost of international transportation significantly and railroads made inland transportation cheaper. The transportation revolution occurred some time between 1820 and 1850. More nations embraced international trade . Globalization in this period was decisively shaped by nineteenth-century imperialism such as in Africa and Asia . The invention of shipping containers in 1956 helped advance

8967-403: The 2011 United States–Korea Free Trade Agreement . Since the 1970s, aviation has become increasingly affordable to middle classes in developed countries . Open skies policies and low-cost carriers have helped to bring competition to the market . In the 1990s, the growth of low-cost communication networks cut the cost of communicating between countries. More work can be performed using

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9114-575: The 2022 Russian invasion of Ukraine included a blockade of Ukrainian ports and international sanctions on Russia , resulting in some de-coupling of the Russian economy with global trade, especially with the European Union and other Western countries. Modern consensus for the last 15 years regards globalization as having run its course and gone into decline. A common argument for this is that trade has dropped since its peak in 2008, and never recovered since

9261-722: The Atlantic Ocean arriving in Liverpool, England, on June 20, 1819, although most of the voyage was actually made under sail. The first ship to make the transatlantic trip substantially under steam power may have been the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

9408-469: The Atlantic Ocean on a scheduled liner voyage before she was converted to diesels in 1986. The last major passenger ship built with steam turbines was the Fairsky , launched in 1984, later Atlantic Star , reportedly sold to Turkish shipbreakers in 2013. Most luxury yachts at the end of the 19th and early 20th centuries were steam driven (see luxury yacht ; also Cox & King yachts ). Thomas Assheton Smith

9555-578: The Atlantic, around the southern tip of Africa, and across the Indian Ocean . Before 1866, no steamship could carry enough coal to make this voyage and have enough space left to carry a commercial cargo. A partial solution to this problem was adopted by the Peninsular and Oriental Steam Navigation Company (P&O), using an overland section between Alexandria and Suez , with connecting steamship routes along

9702-460: The Bristol-New York route. The idea of regular scheduled transatlantic service was under discussion by several groups and the rival British and American Steam Navigation Company was established at the same time. Great Western's design sparked controversy from critics that contended that she was too big. The principle that Brunel understood was that the carrying capacity of a hull increases as

9849-557: The European Age of Discovery and voyages to the New World , and some even to the third millennium BCE. Large-scale globalization began in the 1820s, and in the late 19th century and early 20th century drove a rapid expansion in the connectivity of the world's economies and cultures. The term global city was subsequently popularized by sociologist Saskia Sassen in her work The Global City: New York, London, Tokyo (1991). In 2000,

9996-603: The Indian Ocean region. According to economic historians Kevin H. O'Rourke , Leandro Prados de la Escosura, and Guillaume Daudin, several factors promoted globalization in the period 1815–1870: During the 19th century, globalization approached its form as a direct result of the Industrial Revolution . Industrialization allowed standardized production of household items using economies of scale while rapid population growth created sustained demand for commodities. In

10143-465: The Liverpool to New York route. RMS  Titanic was the largest steamship in the world when she sank in 1912; a subsequent major sinking of a steamer was that of the RMS ; Lusitania , as an act of World War I . Launched in 1938, RMS  Queen Elizabeth was the largest passenger steamship ever built. Launched in 1969, Queen Elizabeth 2 (QE2) was the last passenger steamship to cross

10290-552: The NSU Prima scooter is also shaft-driven Motorcycle engines positioned such that the crankshaft is longitudinal and parallel to the frame are often used for shaft-driven motorcycles. This requires only one 90° turn in power transmission, rather than two. Bikes from Moto Guzzi and BMW, plus the Triumph Rocket III and Honda ST series all use this engine layout. Motorcycles with shaft drive are subject to shaft effect , where

10437-558: The Silk Routes. In addition to economic trade, the Silk Road served as a means of carrying out cultural trade among the civilizations along its network. The movement of people, such as refugees, artists, craftsmen, missionaries , robbers, and envoys, resulted in the exchange of religions, art, languages, and new technologies. From around 3000 BCE to 1000 CE, connectivity within Afro-Eurasia

10584-563: The World Bank and the IMF to become global financial market regulators that would promote neoliberalism and the creation of free markets for multinational corporations on a global scale. In the late 19th and early 20th century, the connectedness of the world's economies and cultures grew very quickly. This slowed down from the 1910s onward due to the World Wars and the Cold War , but picked up again in

10731-552: The automobile company Panhard et Levassor which patented it. Most of these vehicles have a clutch and gearbox (or transmission) mounted directly on the engine, with a drive shaft leading to a final drive in the rear axle. When the vehicle is stationary, the drive shaft does not rotate. Some vehicles (generally sports cars, such as the Chevrolet Corvette C5 / C6 / C7 , Alfa Romeo Alfetta and Porsche 924/944/928 ), seeking improved weight balance between front and rear, use

10878-454: The chassis climbs when power is applied. This effect, which is the opposite of that exhibited by chain-drive motorcycles, is counteracted with systems such as BMW's Paralever , Moto Guzzi's CARC and Kawasaki's Tetra Lever . On a power-driven ship, the drive shaft, or propeller shaft, usually connects the propeller outside the vessel to the driving machinery inside, passing through at least one shaft seal or stuffing box where it intersects

11025-419: The clutch output, located inside of a hollow protective torque tube, transfers power to the rear mounted transaxle (transmission + differential). Thus the Porsche driveshaft only rotates when the rear wheels are turning as the engine-mounted clutch can decouple engine crankshaft rotation from the driveshaft. So for Porsche, when the driver is using the clutch while briskly shifting up or down (manual transmission),

11172-425: The commercial market has declined dramatically due to the development of more efficient diesel engines . One notable exception are LNG carriers which use boil-off gas from the cargo tanks as fuel. However, even there the development of dual-fuel engines has pushed steam turbines into a niche market with about 10% market share in newbuildings in 2013. Lately, there has been some development in hybrid power plants where

11319-436: The competing problems of heat transfer and sufficient strength to deal with the boiler pressure. Aberdeen was a marked success, achieving in trials, at 1,800 indicated horsepower , a fuel consumption of 1.28 pounds (0.58 kg) of coal per indicated horsepower. This was a reduction in fuel consumption of about 60%, compared to a typical steamer built ten years earlier. In service, this translated into less than 40 tons of coal

11466-434: The cube of its dimensions, while water resistance only increases as the square of its dimensions. This meant that large ships were more fuel efficient, something very important for long voyages across the Atlantic. Great Western was an iron-strapped, wooden, side-wheel paddle steamer, with four masts to hoist the auxiliary sails. The sails were not just to provide auxiliary propulsion, but also were used in rough seas to keep

11613-414: The dominant form of globalization. James holds that this series of distinctions allows for an understanding of how, today, the most embodied forms of globalization such as the movement of refugees and migrants are increasingly restricted, while the most disembodied forms such as the circulation of financial instruments and codes are the most deregulated . The journalist Thomas L. Friedman popularized

11760-443: The early 1850s. This was superseded at the beginning of the 20th century by floating pad bearing which automatically built up wedges of oil which could withstand bearing pressures of 500 psi or more. Steam-powered ships were named with a prefix designating their propeller configuration i.e. single, twin, triple-screw. Single-screw Steamship SS , Twin-Screw Steamship TSS , Triple-Screw Steamship TrSS . Steam turbine-driven ships had

11907-450: The emergence of a transnational élite and a phasing out of the nation-state . Meanwhile, he used "cultural globalization" to reference the worldwide homogenization of culture. Other of his usages included " ideological globalization", " technological globalization", and "social globalization". Lechner and Boli (2012) define globalization as more people across large distances becoming connected in more and different ways. "Globophobia"

12054-475: The engine can rev freely with the driver's accelerator pedal input, since with the clutch disengaged, the engine and flywheel inertia is relatively low and is not burdened with the added rotational inertia of the driveshaft. The Porsche torque tube is solidly fastened to both the engine's bell housing and to the transaxle case, fixing the length and alignment between the bell housing and the transaxle and greatly minimizing rear wheel drive reaction torque from twisting

12201-488: The extension of the European Common Market , and in journalism to describe how the "American Negro and his problem are taking on a global significance". They have also argued that four forms of globalization can be distinguished that complement and cut across the solely empirical dimensions. According to James, the oldest dominant form of globalization is embodied globalization, the movement of people. A second form

12348-502: The first circumnavigation of the globe under the Magellan-Elcano expedition which preluded the rise of global silver trade . Early modern globalization is distinguished from modern globalization on the basis of expansionism , the method of managing global trade, and the level of information exchange. The period is marked by the shift of hegemony to Western Europe, the rise of larger-scale conflicts between powerful nations such as

12495-411: The first screw propeller to an engine at his Birmingham works, an early steam engine , beginning the use of a hydrodynamic screw for propulsion. The development of screw propulsion relied on the following technological innovations. Steam engines had to be designed with the power delivered at the bottom of the machinery, to give direct drive to the propeller shaft . A paddle steamer's engines drive

12642-498: The first working steamboat and paddle steamer , the Pyroscaphe , from 1783. Once the technology of steam was mastered at this level, steam engines were mounted on larger, and eventually, ocean-going vessels. Becoming reliable, and propelled by screw rather than paddlewheels, the technology changed the design of ships for faster, more economic propulsion. Paddlewheels as the main motive source became standard on these early vessels. It

12789-489: The form of structural adjustment programs (SAPs) that were implemented by the World Bank and the International Monetary Fund (IMF). These programs required that the country receiving monetary aid would open its markets to capitalism, privatize public industry, allow free trade, cut social services like healthcare and education and allow the free movement of giant multinational corporations. These programs allowed

12936-448: The front axle are combined into one housing alongside the engine, and a single drive shaft runs the length of the car to the rear axle. This is a favoured design where the torque is biased to the front wheels to give car-like handling, or where the maker wishes to produce both four-wheel drive and front-wheel drive cars with many shared components. The automotive industry also uses drive shafts at testing plants. At an engine test stand ,

13083-423: The globalization of business is centered around the diminution of international trade regulations as well as tariffs , taxes, and other impediments that suppresses global trade, economic globalization is the process of increasing economic integration between countries, leading to the emergence of a global marketplace or a single world market. Depending on the paradigm, economic globalization can be viewed as either

13230-563: The globalization of commerce. After World War II, work by politicians led to the agreements of the Bretton Woods Conference , in which major governments laid down the framework for international monetary policy , commerce, and finance, and the founding of several international institutions intended to facilitate economic growth by lowering trade barriers . Initially, the General Agreement on Tariffs and Trade (GATT) led to

13377-517: The great chagrin of Reactionists, it has drawn from under the feet of industry the national ground on which it stood. All old-established national industries have been destroyed or are daily being destroyed. . . . In place of the old local and national seclusion and self-sufficiency, we have intercourse in every direction, universal inter-dependence of nations. Sociologists Martin Albrow and Elizabeth King define globalization as "all those processes by which

13524-440: The great movements of trade and empire across Asia and the Indian Ocean from the 15th century onward. In 1848, Karl Marx noticed the increasing level of national inter-dependence brought on by capitalism , and predicted the universal character of the modern world society. He states: The bourgeoisie has through its exploitation of the world market given a cosmopolitan character to production and consumption in every country. To

13671-497: The growing prominence of attention focused on the movement of diseases, the proliferation of popular culture and consumer values, the growing prominence of international institutions like the UN, and concerted international action on such issues as the environment and human rights. Other developments as dramatic were the Internet's becoming influential in connecting people across the world; As of June 2012 , more than 2.4 billion people—over

13818-524: The historically variable ways that it has been practiced and socially understood through changing world-time. Manfred Steger , professor of global studies and research leader in the Global Cities Institute at RMIT University , identifies four main empirical dimensions of globalization : economic, political, cultural, and ecological . A fifth dimension—the ideological—cutting across the other four. The ideological dimension, according to Steger,

13965-424: The hull as waves pass beneath it—becomes too great. Iron hulls are far less subject to hogging, so that the potential size of an iron-hulled ship is much greater. In the spring of 1840 Brunel also had the opportunity to inspect SS  Archimedes , the first screw-propelled steamship, completed only a few months before by F. P. Smith's Propeller Steamship Company. Brunel had been looking into methods of improving

14112-429: The hull structure. It should provide an unrestricted delivery of power by the propeller shaft. The combination of hull and stern tube must avoid any flexing that will bend the shaft or cause uneven wear. The inboard end has a stuffing box that prevents water from entering the hull along the tube. Some early stern tubes were made of brass and operated as a water lubricated bearing along the entire length. In other instances

14259-454: The information and communication technology revolution that lowered communication costs, along with trade liberalisation and the shift of manufacturing operations to emerging economies (particularly China). The word globalization was used in the English language as early as the 1930s, but only in the context of education, and the term failed to gain traction. Over the next few decades, the term

14406-409: The machine's wheels to the gear train that works the cutting mechanism. In the 1890s, the term began to be used in a manner closer to the modern sense. In 1891, for example, Battles referred to the shaft between the transmission and driving trucks of his Climax locomotive as the drive shaft, and Stillman referred to the shaft linking the crankshaft to the rear axle of his shaft-driven bicycle as

14553-457: The mid-19th century. In Stover's 1861 patent reissue for a planing and matching machine , the term is used to refer to the belt-driven shaft by which the machine is driven. The term is not used in his original patent. Another early use of the term occurs in the 1861 patent reissue for the Watkins and Bryson horse-drawn mowing machine . Here, the term refers to the shaft transmitting power from

14700-401: The needs of the human migration to the United States and Australia. RMS  Umbria and her sister ship RMS  Etruria were the last two Cunard liners of the period to be fitted with auxiliary sails. Both ships were built by John Elder & Co. of Glasgow, Scotland, in 1884. They were record breakers by the standards of the time, and were the largest liners then in service, plying

14847-570: The newly formed Blue Funnel Line . His competitors rapidly copied his ideas for their own new ships. The opening of the Suez Canal in 1869 gave a distance saving of about 3,250 nautical miles (6,020 km; 3,740 mi) on the route from China to London. The canal was not a practical option for sailing vessels, as using a tug was difficult and expensive – so this distance saving was not available to them. Steamships immediately made use of this new waterway and found themselves in high demand in China for

14994-415: The operating costs of steamships were still too high in certain trades, so sail was the only commercial option in many situations. The compound engine, where steam was expanded twice in two separate cylinders, still had inefficiencies. The solution was the triple expansion engine, in which steam was successively expanded in a high pressure, intermediate pressure and a low pressure cylinder. The theory of this

15141-450: The paddle steamer Beaver , launched in 1836 to service Hudson's Bay Company trading posts between Puget Sound Washington and Alaska . The most testing route for steam was from Britain or the East Coast of the U.S. to the Far East . The distance from either is roughly the same, between 14,000 to 15,000 nautical miles (26,000 to 28,000 km; 16,000 to 17,000 mi), traveling down

15288-409: The people of the world are incorporated into a single world society." In The Consequences of Modernity , Anthony Giddens writes: "Globalization can thus be defined as the intensification of worldwide social relations which link distant localities in such a way that local happenings are shaped by events occurring many miles away and vice versa." In 1992, Roland Robertson , professor of sociology at

15435-451: The performance of Great Britain ' s paddlewheels, and took an immediate interest in the new technology, and Smith, sensing a prestigious new customer for his own company, agreed to lend Archimedes to Brunel for extended tests. Over several months, Smith and Brunel tested a number of different propellers on Archimedes in order to find the most efficient design, a four-bladed model submitted by Smith. When launched in 1843, Great Britain

15582-586: The phase of increasing trade links and cultural exchange that characterized the period immediately preceding the advent of high "modern globalization" in the late 19th century. This phase of globalization was characterized by the rise of maritime European empires, in the 15th and 17th centuries, first the Portuguese Empire (1415) followed by the Spanish Empire (1492), and later the Dutch and British Empires . In

15729-649: The port of Savannah, Georgia , US, on 22 May 1819, arriving in Liverpool , England, on 20 June 1819; her steam engine having been in use for part of the time on 18 days (estimates vary from 8 to 80 hours). A claimant to the title of the first ship to make the transatlantic trip substantially under steam power is the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

15876-503: The prefix TS . In the UK the prefix RMS for Royal Mail Steamship overruled the screw configuration prefix. The first steamship credited with crossing the Atlantic Ocean between North America and Europe was the American ship SS  Savannah , though she was actually a hybrid between a steamship and a sailing ship, with the first half of the journey making use of the steam engine. Savannah left

16023-451: The process of world shrinkage, of distances getting shorter, things moving closer. It pertains to the increasing ease with which somebody on one side of the world can interact, to mutual benefit, with somebody on the other side of the world. Paul James defines globalization with a more direct and historically contextualized emphasis: Globalization is the extension of social relations across world-space, defining that world-space in terms of

16170-442: The reduction of trade barriers as well as other economic reforms, and, in many cases, immigration. International standards have made trade in goods and services more efficient. An example of such standard is the intermodal container . Containerization dramatically reduced the costs of transportation, supported the post-war boom in international trade , and was a major element in globalization. International standards are set by

16317-439: The rest of the world in terms of industrial production and economic output , archaic globalization was a phenomenon that was driven not only by Europe but also by other economically developed Old World centers such as Gujarat , Bengal , coastal China , and Japan . The German historical economist and sociologist Andre Gunder Frank argues that a form of globalization began with the rise of trade links between Sumer and

16464-525: The revolutionary SS  Great Britain , also built by Brunel, became the first iron-hulled screw-driven ship to cross the Atlantic. SS Great Britain was the first ship to combine these two innovations. After the initial success of its first liner, SS  Great Western of 1838, the Great Western Steamship Company assembled the same engineering team that had collaborated so successfully before. This time however, Brunel, whose reputation

16611-478: The shaft, a thrust bearing is needed to transfer that load to the hull without excessive friction. SS  Great Britain had a 2 ft diameter gunmetal plate on the forward end of the shaft which bore against a steel plate attached to the engine beds. Water at 200 psi was injected between these two surfaces to lubricate and separate them. This arrangement was not sufficient for higher engine powers and oil lubricated "collar" thrust bearings became standard from

16758-527: The ship on an even keel and ensure that both paddle wheels remained in the water, driving the ship in a straight line. The hull was built of oak by traditional methods. She was the largest steamship for one year, until the British and American's British Queen went into service. Built at the shipyard of Patterson & Mercer in Bristol, Great Western was launched on 19 July 1837 and then sailed to London, where she

16905-488: The spatial organization of social relations and transactions—assessed in terms of their extensity, intensity, velocity and impact—generating transcontinental or inter-regional flows" was called "probably the most widely-cited definition" in the 2014 DHL Global Connectiveness Index . Swedish journalist Thomas Larsson, in his book The Race to the Top: The Real Story of Globalization , states that globalization: ...is

17052-510: The start of the 1870 tea season. The steamships were able to obtain a much higher rate of freight than sailing ships and the insurance premium for the cargo was less. So successful were the steamers using the Suez Canal that, in 1871, 45 were built in Clyde shipyards alone for Far Eastern trade. Throughout the 1870s, compound-engined steamships and sailing vessels coexisted in an economic equilibrium:

17199-966: The steam turbine is used together with gas engines. As of August 2017 the newest class of Steam Turbine ships are the Seri Camellia -class LNG carriers built by Hyundai Heavy Industries (HHI) starting in 2016 and comprising five units. Nuclear powered ships are basically steam turbine vessels. The boiler is heated, not by heat of combustion , but by the heat generated by nuclear reactor. Most atomic-powered ships today are either aircraft carriers or submarines . Globalization 1800s: Martineau · Tocqueville  ·  Marx ·  Spencer · Le Bon · Ward · Pareto ·  Tönnies · Veblen ·  Simmel · Durkheim ·  Addams ·  Mead · Weber ·  Du Bois ·  Mannheim · Elias Globalization ( North American spelling ; also Oxford spelling [UK]) or globalisation (non-Oxford British spelling ; see spelling differences )

17346-402: The stress, while avoiding too much additional weight as that would in turn increase their inertia . To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints , jaw couplings , or rag joints , and sometimes a splined joint or prismatic joint . The term driveshaft first appeared during

17493-551: The term "flat world" , arguing that globalized trade , outsourcing , supply-chaining , and political forces had permanently changed the world, for better and worse. He asserted that the pace of globalization was quickening and that its impact on business organization and practice would continue to grow. Economist Takis Fotopoulos defined "economic globalization" as the opening and deregulation of commodity , capital , and labor markets that led toward present neoliberal globalization. He used "political globalization" to refer to

17640-448: The term drive shaft is restricted to a transverse shaft that transmits power to the wheels, especially the front wheels. The shaft connecting the gearbox to a rear differential is called a "propeller shaft", or "prop-shaft". A prop-shaft assembly consists of a propeller shaft, a slip joint and one or more universal joints. Where the engine and axles are separated from each other, as on four-wheel drive and rear-wheel drive vehicles, it

17787-532: The term and bringing it into the mainstream business audience in the later in the middle of 1980s. Though often treated as synonyms, in French, globalization is seen as a stage following mondialisation, a stage that implies the dissolution of national identities and the abolishment of borders inside the world network of economic exchanges. Since its inception, the concept of globalization has inspired competing definitions and interpretations. Its antecedents date back to

17934-472: The time of the earliest civilizations until roughly the 1600s. This term is used to describe the relationships between communities and states and how they were created by the geographical spread of ideas and social norms at both local and regional levels. In this schema, three main prerequisites are posited for globalization to occur. The first is the idea of Eastern Origins, which shows how Western states have adapted and implemented learned principles from

18081-602: The time. Her boilers ran at 26 pounds per square inch (180 kPa) but relied on a substantial amount of superheat . Alfred Holt , who had entered marine engineering and ship management after an apprenticeship in railway engineering, experimented with boiler pressures of 60 pounds per square inch (410 kPa) in Cleator . Holt was able to persuade the Board of Trade to allow these boiler pressures and, in partnership with his brother Phillip launched Agamemnon in 1865. Holt had designed

18228-407: The transaxle in any plane. A drive shaft connecting a rear differential to a rear wheel may be called a half-shaft. The name derives from the fact that two such shafts are required to form one rear axle . Early automobiles often used chain drive or belt drive mechanisms rather than a drive shaft. Some used electrical generators and motors to transmit power to the wheels. In British English ,

18375-468: The transmission of his steam-powered Motor Vehicle of 1903 and the driven axle. The pioneering automobile industry company, Autocar , was the first to use a drive shaft in a gasoline-powered car. Built in 1901, today this vehicle is in the collection of the Smithsonian Institution. An automobile may use a longitudinal shaft to deliver power from an engine/transmission to the other end of

18522-489: The two largest national economies. The economic impact of the COVID-19 pandemic included a massive decline in tourism and international business travel as many countries temporarily closed borders. The 2021–2022 global supply chain crisis resulted from temporary shutdowns of manufacturing and transportation facilities, and labor shortages. Supply problems incentivized some switches to domestic production. The economic impact of

18669-494: The vehicle before it goes to the wheels. A pair of short drive shafts is commonly used to send power from a central differential , transmission , or transaxle to the wheels. In front-engined, rear-wheel drive vehicles, a longer drive shaft is also required to send power the length of the vehicle. Two forms dominate: The torque tube with a single universal joint and the more common Hotchkiss drive with two or more joints. This system became known as Système Panhard after

18816-433: The vehicle experiencing any of the signs below, drivers should get it checked as soon as possible. A cardan shaft park brake works on the drive shaft rather than the wheels. These brakes are commonly used on small trucks. This type of brake is prone to failure and has led to incidents where the truck has run away on a slope, leading to safety alerts being issued. Heavy vehicles that have this type of park brake usually have

18963-550: The vehicle from moving on a slope. Drive shafts have been used on motorcycles since before WW1, such as the Belgian FN motorcycle from 1903 and the Stuart Turner Stellar motorcycle of 1912. As an alternative to chain and belt drives, drive shafts offer long-lived, clean, and relatively maintenance-free operation. A disadvantage of shaft drive on a motorcycle is that helical gearing , spiral bevel gearing or similar

19110-473: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The British side-wheel paddle steamer SS  Great Western was the first steamship purpose-built for regularly scheduled trans-Atlantic crossings, starting in 1838. In 1836 Isambard Kingdom Brunel and a group of Bristol investors formed the Great Western Steamship Company to build a line of steamships for

19257-498: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The first steamship purpose-built for regularly scheduled trans-Atlantic crossings was the British side-wheel paddle steamer SS  Great Western built by Isambard Kingdom Brunel in 1838, which inaugurated the era of the trans-Atlantic ocean liner . SS  Archimedes , built in Britain in 1839 by Francis Pettit Smith ,

19404-552: Was an English aristocrat who forwarded the design of the steam yacht in conjunction with the Scottish marine engineer Robert Napier . By World War II , steamers still constituted 73% of world's tonnage, and similar percentage remained in early 1950s. The decline of the steamship began soon thereafter. Many had been lost in the war, and marine diesel engines had finally matured as an economical and viable alternative to steam power. The diesel engine had far better thermal efficiency than

19551-423: Was an effective means of propulsion under ideal conditions but otherwise had serious drawbacks. The paddle-wheel performed best when it operated at a certain depth, however when the depth of the ship changed from added weight it further submerged the paddle wheel causing a substantial decrease in performance. Within a few decades of the development of the river and canal steamboat, the first steamships began to cross

19698-465: Was at its height, came to assert overall control over design of the ship—a state of affairs that would have far-reaching consequences for the company. Construction was carried out in a specially adapted dry dock in Bristol , England. Brunel was given a chance to inspect John Laird 's 213-foot (65 m) (English) channel packet ship Rainbow —the largest iron- hulled ship then in service—in 1838, and

19845-479: Was by far the largest vessel afloat. Brunel's last major project, SS  Great Eastern , was built in 1854–1857 with the intent of linking Great Britain with India, via the Cape of Good Hope , without any coaling stops. This ship was arguably more revolutionary than her predecessors. She was one of the first ships to be built with a double hull with watertight compartments and was the first liner to have four funnels. She

19992-556: Was centered upon the Indo-Mediterranean region, with the Silk Road later rising in importance with the Mongol Empire's consolidation of Asia in the 13th century. " Early modern " or "proto-globalization" covers a period of the history of globalization roughly spanning the years between 1600 and 1800. The concept of "proto-globalization" was first introduced by historians A. G. Hopkins and Christopher Bayly . The term describes

20139-402: Was established in the 1850s by John Elder , but it was clear that triple expansion engines needed steam at, by the standards of the day, very high pressures. The existing boiler technology could not deliver this. Wrought iron could not provide the strength for the higher pressures. Steel became available in larger quantities in the 1870s, but the quality was variable. The overall design of boilers

20286-450: Was fitted with two side-lever steam engines from the firm of Maudslay, Sons & Field , producing 750 indicated horsepower between them. The ship proved satisfactory in service and initiated the transatlantic route, acting as a model for all following Atlantic paddle-steamers. The Cunard Line 's RMS  Britannia began her first regular passenger and cargo service by a steamship in 1840, sailing from Liverpool to Boston. In 1845

20433-553: Was improved in the early 1860s, with the Scotch-type boilers – but at that date these still ran at the lower pressures that were then current. The first ship fitted with triple expansion engines was Propontis (launched in 1874). She was fitted with boilers that operated at 150 pounds per square inch (1,000 kPa) – but these had technical problems and had to be replaced with ones that ran at 90 pounds per square inch (620 kPa). This substantially degraded performance. There were

20580-404: Was laid down) and was soon followed by all subsequent liners. Most larger warships of the world's navies were propelled by steam turbines burning bunker fuel in both World Wars, apart from obsolete ships with reciprocating machines from the turn of the century, and rare cases of usage of diesel engines in larger warships. Steam turbines burning fuel remained in warship construction until the end of

20727-630: Was largely unrestricted: the state controlled only the supply of grain. Trade on the Silk Road was a significant factor in the development of civilizations from China, the Indian subcontinent , Persia , Europe, and Arabia , opening long-distance political and economic interactions between them. Though silk was certainly the major trade item from China, common goods such as salt and sugar were traded as well; and religions , syncretic philosophies, and various technologies, as well as diseases, also traveled along

20874-468: Was occasionally used by other scholars and media, but it was not clearly defined. One of the first usages of the term in the meaning resembling the later, was by French economist François Perroux in his essays from the early 1960s (in his French works he used the term " mondialisation " (literarly worldization in French ), also translated as mundialization). Theodore Levitt is often credited with popularizing

21021-537: Was powered by the crankshaft , transmission or another truck through a second universal joint. A quill drive also has the ability to slide lengthways, effectively varying its length. This is required to allow the bogies to rotate when passing a curve. Cardan shafts are used in some diesel locomotives (mainly diesel-hydraulics, such as British Rail Class 52 ) and some electric locomotives (e.g. British Rail Class 91 ). They are also widely used in diesel multiple units . The drive shaft has served as an alternative to

21168-415: Was soon converted to iron-hulled technology. He scrapped his plans to build a wooden ship and persuaded the company directors to build an iron-hulled ship. Iron's advantages included being much cheaper than wood, not being subject to dry rot or woodworm , and its much greater structural strength. The practical limit on the length of a wooden-hulled ship is about 300 feet, after which hogging —the flexing of

21315-455: Was the biggest liner throughout the rest of the 19th century with a gross tonnage of almost 20,000 tons and had a passenger-carrying capacity of thousands. The ship was ahead of her time and went through a turbulent history, never being put to her intended use. The first transatlantic steamer built of steel was SS  Buenos Ayrean , built by Allan Line Royal Mail Steamers and entering service in 1879. The first regular steamship service from

21462-399: Was the change from the paddle-wheel to the screw-propeller as the mechanism of propulsion. These steamships quickly became more popular, because the propeller's efficiency was consistent regardless of the depth at which it operated. Being smaller in size and mass and being completely submerged, it was also far less prone to damage. James Watt of Scotland is widely given credit for applying

21609-565: Was the world's first screw propeller -driven steamship for open water seagoing. She had considerable influence on ship development, encouraging the adoption of screw propulsion by the Royal Navy , in addition to her influence on commercial vessels. The first screw-driven propeller steamship introduced in America was on a ship built by Thomas Clyde in 1844 and many more ships and routes followed. The key innovation that made ocean-going steamers viable

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