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Olympic Games
The modern Olympic Games or Olympics (french: link=no, Jeux olympiques) are the leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a multi-sport event, variety of competitions. The Olympic Games are considered the world's foremost sports competition with more than 200 teams, representing sovereign states and territories, participating. The Olympic Games are normally held every Olympiad, four years, and since 1994 Winter Olympics, 1994, have alternated between the Summer Olympic Games, Summer and Winter Olympic Games, Winter Olympics every two years during the four-year period. Their creation was inspired by the ancient Olympic Games (), held in Olympia, Greece from the 8th century BC to the 4th century AD. Pierre de Coubertin, Baron Pierre de Coubertin founded the International Olympic Committee (IOC) in 1894, leading to the first modern Games in Athens in 1896. The IOC is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Composite Material
A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual elements. Within the finished structure, the individual elements remain separate and distinct, distinguishing composites from mixtures and solid solutions. Typical Materials, engineered composite materials include: *Reinforced concrete and masonry *Composite wood such as plywood *Reinforced plastics, such as fibre-reinforced polymer or fiberglass *Ceramic matrix composites (composite armor, composite ceramic and metal matrices) *Metal matrix composites *and other Advanced composite materials (engineering), advanced composite materials There are various reasons where new material can be favoured. Typical examples include materials which are less ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing (sport)
Rowing, sometimes called crew in the United States, is the sport of racing boats using oars. It differs from paddling sports in that rowing oars are attached to the boat using oarlocks, while paddles are not connected to the boat. Rowing is divided into two disciplines: sculling and sweep rowing. In sculling, each rower holds two oars—one in each hand, while in sweep rowing each rower holds one oar with both hands. There are several boat classes in which athletes may compete, ranging from single sculls, occupied by one person, to shells with eight rowers and a coxswain, called eights. There are a wide variety of course types and formats of racing, but most elite and championship level racing is conducted on calm water courses long with several lanes marked using buoys. Modern rowing as a competitive sport can be traced to the early 17th century when professional watermen held races ( regattas) on the River Thames in London, England. Often prizes were offered by the L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon-fibre Reinforced Plastic
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications. The binding polymer is often a thermoset resin such as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The properties of the final CFRP product can be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other addi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Rowing Championships
The World Rowing Championships is an international rowing regatta organized by FISA (the International Rowing Federation). It is a week-long event held at the end of the northern hemisphere summer and in non- Olympic years is the highlight of the international rowing calendar. History The first event was held in Lucerne, Switzerland, in 1962. The event then was held every four years until 1974, when it became an annual competition. Also in 1974, Men's lightweight and Women's open weight events were added to the championships. Initially, Men's events were 2000 metres long and Women's events 1000 metres. At the 1984 World Championships in Montreal, Canada, Women's lightweight demonstration events were raced over a 2000-metre course for the first time. In 1985, Women's lightweight events were officially added to the schedule and all Men's and Women's events were contested over a 2000-metre course. Since 1996, during (Summer) Olympic years, the World Rowing Junior Championshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or woodchips or fiber. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racing Shell
In watercraft, a racing shell (also referred to as just a ''fine boat'' (UK) or just ''shell'') is an extremely narrow, and often comparatively long, rowing boat specifically designed for racing or exercise. It is outfitted with long oars, outriggers to hold the oarlocks away from the boat, and sliding seats. The boat's long length and semicircular cross-section reduce drag to a minimum. This makes the boat both fast and unstable. It must be balanced by the rowers to avoid tipping. Being able to balance – or "set" – the boat while putting maximum effort into the oars is therefore an essential skill of sport rowing. History The racing shell evolved from the simple working rowboat. Boats with longer hulls and narrower in beam were developed in the early 19th century specifically for team racing. These dedicated boats were the first boats that could be called racing shells, and they evolved into the highly specialized forms used today. Riggers A narrower boat provides a sharp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing Boat
Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically attached to the boat, and the rower drives the oar like a lever, exerting force in the ''same'' direction as the boat's travel; while paddles are completely hand-held and have no attachment to the boat, and are driven like a cantilever, exerting force ''opposite'' to the intended direction of the boat. In some strict terminologies, using oars for propulsion may be termed either "pulling" or "rowing", with different definitions for each. Where these strict terminologies are used, the definitions are reversed depending on the context. On saltwater a "pulling boat" has each person working one oar on one side, alternating port and starboard along the length of the boat; whilst "rowing" means each person operates two oars, one on each side of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing At The Summer Olympics
Rowing at the Summer Olympics has been part of the competition since its debut in the 1900 Summer Olympics. Rowing was on the program at the 1896 Summer Olympics but was cancelled due to bad weather. Only men were allowed to compete until the women's events were introduced at the 1976 Summer Olympics in Montreal which gave national federations the incentive to support women's events and catalysed growth in women's rowing. Lightweight rowing events (which have weight-limited crews) were introduced to the games in 1996. Qualifying for the rowing events is under the jurisdiction of the World Rowing Federation. World Rowing predates the modern Olympics and was the first international sport federation to join the modern Olympic movement. Summary Events At the 2016 and other recent Olympics, the following 14 events were contested: *Men: Single sculls, Double sculls, Quadruple sculls, Coxless pair, Coxless four, Eight. *Lightweight Men: Double sculls, Coxless four *Women: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweep (rowing)
Sweep rowing is one of two disciplines of the sport of rowing. In sweep rowing each rower has one oar, usually held with both hands. As each rower has only one oar, the rowers have to be paired so that there is an oar on each side of the boat. In the United Kingdom, rowing generally refers to sweep rowing only. The term pulling was also used historically.W B Woodgate ''Boating'' Read Books, 2008 In the other rowing discipline, sculling, each rower holds two oars, one in each hand. Sweep or single oar rowing has a long history and was the means of propulsion for Greek triremes and Viking longboats. These boats were wide enough for the pairs of rowers to sit alongside each other. Boats can go faster, the narrower they are, because a smaller cross-sectional area reduces drag and wave drag and gives a sharper angle to the bow. The hulls can be kept narrower by attaching riggers to the gunwales, so that the oarlocks can be placed farther out to carry longer oars. A narrower hull me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coxswain (rowing)
In a rowing crew, the coxswain ( ; colloquially known as the cox or coxie) is the member who does not row but steers the boat and faces forward, towards the bow. The coxswain is responsible for steering the boat and coordinating the power and rhythm of the rowers. In some capacities, the coxswain is responsible for implementing the training regimen or race plan. Most coaches cannot communicate to boat/coxswain, so the coxswain is the "coach" in the boat. A coxswain is necessary in the first place because the rowers sit with their backs to the direction of travel. In most racing, coxswains may be of either sex regardless of that of the rowers, and in fact are very often women, as the desired weight of a cox is generally as close to 125 lbs (USRowing) / 55 kg (World Rowing Federation) as possible; far more females than males fulfill that qualification (see Sex, and Weight, below). Role The role of a coxswain in a crew is to: * Keep the boat and rowers safe at all times by p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Rowing Federation
World Rowing, also known as the World Rowing Federation (former abbreviation FISA; french: Fédération internationale des sociétés d'aviron), is the international governing body for rowing. Its current president is Jean-Christophe Rolland who succeeded Denis Oswald at a ceremony held in Lucerne in July 2014. The World Rowing Cup, World Rowing Championships, and other such competitions are overseen by this organization. History General It was founded by rowing representatives from France, Switzerland, Belgium, Adriatica, and Italy on 25 June 1892 in Turin in response to the growing popularity of the sport of rowing, and the consequent need for uniformity of regulations over such matters as race lengths, boat composition, and weight classes. Also, at the time, betting on rowing was very popular, and the rowers or coaches were themselves often taking bets. Amateur status, whilst widespread in England and elsewhere, was unknown in the sport in many nations, a state of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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