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Barge Pole
A setting pole or quant (quant pole) is a pole, handled by a crew member, to move boats, barges (barge pole) or punts by pushing the craft in the desired direction. The pole is used to push against the river or sea bed or, in some cases, the bank of the river. If used from the stern (back) of the craft, the action is usually called "punting". Especially on larger vessels, it is more effective if the operator starts at the bow and walks aft along a side deck, pushing against the bottom all the waythis action is called "quanting" or "setting". If there is a short stretch where the water is too deep for the pole to reach the bottom, the pole can be used as a paddle. Whilst this is substantially less effective than a bladed oar or paddle, it is sufficient to keep the boat moving. A setting pole is usually made of ash, or a similar resilient wood, or of hollow metal so that in either case it floats if left in the water. They are usually capped on one or both ends with metal to withstan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Travois
A travois (; Canadian French, from French , a frame for restraining horses; also obsolete travoy or travoise) is a historical frame structure that was used by indigenous peoples, notably the Plains Aboriginals of North America, to drag loads over land. There is evidence to support the thesis that travois were used in other parts of the world before the invention of the wheel. Construction and use The basic construction consists of a platform or netting mounted on two long poles, lashed in the shape of an elongated isosceles triangle; the frame was dragged with the sharply pointed end forward. Sometimes the blunt end of the frame was stabilized by a third pole bound across the two poles. The travois was dragged by hand, sometimes fitted with a shoulder harness for more efficient dragging, or dragged by dogs or horses (after the 16th-century introduction of horses by the Spanish). A travois could either be loaded by piling goods atop the bare frame and tying them in place, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Current (stream)
A current in a stream is the flow of water influenced by gravity as the water moves downhill to reduce its potential energy. The current varies spatially as well as temporally within the stream, dependent upon the flow volume of water, stream gradient, and channel geometry. In tidal zones, the current and streams may reverse on the flood tide before resuming on the ebb tide Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tabl .... See also * * * * * * {{authority control Coastal geography Hydrology Rivers Water streams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust
Thrust is a reaction force described quantitatively by Newton's third law. When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction to be applied to that system. The force applied on a surface in a direction perpendicular or normal to the surface is also called thrust. Force, and thus thrust, is measured using the International System of Units (SI) in newtons (symbol: N), and represents the amount needed to accelerate 1 kilogram of mass at the rate of 1 meter per second per second. In mechanical engineering, force orthogonal to the main load (such as in parallel helical gears) is referred to as static thrust. Examples A fixed-wing aircraft propulsion system generates forward thrust when air is pushed in the direction opposite to flight. This can be done by different means such as the spinning blades of a propeller, the propelling jet of a jet engine, or by ejecting hot gases from a rocket ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paddle
A paddle is a handheld tool with an elongated handle and a flat, widened distal end (i.e. the ''blade''), used as a lever to apply force onto the bladed end. It most commonly describes a completely handheld tool used to propel a human-powered watercraft by pushing water in a direction opposite to the direction of travel (i.e. paddling). It is different to an oar (which is similar in shape and performs the same function via rowing) in that the latter is attached to the watercraft via a fulcrum. However, the term "paddle" can also be used to describe objects of similar shapes or functions: *A rotating set of paddle boards known as a paddle wheel is used to propel a steamboat (i.e. paddle steamer). *A number of games (e.g. ping-pong), a "paddle" or "bat" is a small racket used to strike a ball. *A mixing paddle is an agitator device used to stir and more thoroughly mix separate ingredients within a mixture. *A spanking paddle is used in corporal punishment, typically to forcefull ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canoeing
Canoeing is an activity which involves paddling a canoe with a single-bladed paddle. Common meanings of the term are limited to when the canoeing is the central purpose of the activity. Broader meanings include when it is combined with other activities such as canoe camping, or where canoeing is merely a transportation method used to accomplish other activities. Most present-day canoeing is done as or as a part of a sport or recreational activity. In some parts of Europe canoeing refers to both canoeing and kayaking, with a canoe being called an ''open canoe''. A few of the recreational forms of canoeing are canoe camping and canoe racing. Other forms include a wide range of canoeing on lakes, rivers, oceans, ponds and streams. History of organized recreational canoeing Canoeing is an ancient mode of transportation. Modern recreational canoeing was established in the late 19th century. In 1924, canoeing associations from Austria, Germany, Denmark and Sweden founded the ''I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as Stream#Creek, creek, Stream#Brook, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to Geographical feature, geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "Burn (landform), burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from Precipitation (meteorology), precipitation through a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge
Cambridge ( ) is a university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cambridge became an important trading centre during the Roman and Viking ages, and there is archaeological evidence of settlement in the area as early as the Bronze Age. The first town charters were granted in the 12th century, although modern city status was not officially conferred until 1951. The city is most famous as the home of the University of Cambridge, which was founded in 1209 and consistently ranks among the best universities in the world. The buildings of the university include King's College Chapel, Cavendish Laboratory, and the Cambridge University Library, one of the largest legal deposit libraries in the world. The city's skyline is dominated by several college buildings, along with the spire of the Our Lady and the English Martyrs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford's industries include motor manufacturing, education, publishing, information technology and science. History The history of Oxford in England dates back to its original settlement in the Saxon period. Originally of strategic significance due to its controlling location on the upper reaches of the River Thames at its junction with the River Cherwell, the town grew in national importance during the early Norman period, and in the late 12th century became home to the fledgling University of Oxford. The city was besieged during The Anarchy in 1142. The university rose to dom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed (plant)
Reed is a common name for several tall, grass-like plants of wetlands. Varieties They are all members of the order Poales (in the modern, expanded circumscription), and include: In the grass family, Poaceae * Common reed (''Phragmites australis''), the original species named reed * Giant reed (''Arundo donax''), used for making reeds for musical instruments * Burma reed (''Neyraudia reynaudiana'') * Reed canary-grass (''Phalaris arundinacea'') * Reed sweet-grass (''Glyceria maxima'') * Small-reed (''Calamagrostis'' species) In the sedge family, Cyperaceae * Paper reed or papyrus ('' Cyperus papyrus''), the source of the Ancient Egyptian writing material, also used for making boats In the family Typhaceae * Bur-reed (''Sparganium'' species) * Reed-mace (''Typha'' species), also called bulrush or cattail In the family Restionaceae * Cape thatching reed ('' Elegia tectorum''), a restio originating from the South-western Cape, South Africa. * Thatching reed (''Thamnochortus ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modern Standard Arabic
Modern Standard Arabic (MSA) or Modern Written Arabic (MWA), terms used mostly by linguists, is the variety of Standard language, standardized, Literary language, literary Arabic that developed in the Arab world in the late 19th and early 20th centuries; occasionally, it also refers to spoken Arabic that approximates this written standard. MSA is the language used in literature, academia, print media, print and mass media, law and legislation, though it is generally not spoken as a first language, similar to Contemporary Latin. It is a Pluricentric language, pluricentric standard language taught throughout the Arab world in formal education, differing significantly from many vernacular varieties of Arabic that are commonly spoken as mother tongues in the area; these are only partially mutually intelligible with both MSA and with each other depending on their proximity in the Dialect continuum#Arabic, Arabic dialect continuum. Many linguists consider MSA to be distinct from Clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
