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Airboard (sled)
An airboard is an inflatable bodyboard for the snow. It is a single-person sled A sled, skid, sledge, or sleigh is a land vehicle that slides across a surface, usually of ice or snow. It is built with either a smooth underside or a separate body supported by two or more smooth, relatively narrow, longitudinal runners .... References {{sport-stub Sledding Sports equipment Racing vehicles Human-powered vehicles Sliding vehicles Snow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflatable
An inflatable is an object that can be inflated with a gas, usually with air, but hydrogen, helium and nitrogen are also used. One of several advantages of an inflatable is that it can be stored in a small space when not inflated, since inflatables depend on the presence of a gas to maintain their size and shape. Function fulfillment per mass used compared with non-inflatable strategies is a key advantage. Stadium cushions, impact guards, vehicle wheel inner tubes, emergency air bags, and inflatable space habitats employ the inflatable principle. Inflation occurs through several strategies: pumps, ram-air, blowing, and suction. Although the term ''inflatable'' can refer to any type of inflatable object, the term is often used in boating to specifically refer to inflatable boats. Types High-pressure vs. low-pressure A distinction is made between high-pressure and low-pressure inflatables. In a high-pressure inflatable, structural limbs like pillars and arches are built o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bodyboard
Bodyboarding is a water sport in which the surfer rides a bodyboard on the crest, face, and curl of a wave which is carrying the surfer towards the shore. Bodyboarding is also referred to as ''Boogieboarding'' due to the invention of the "Boogie Board" by Tom Morey in 1971. The average bodyboard consists of a short, rectangular piece of hydrodynamic foam. Bodyboarders typically use swim fins for additional propulsion and control while riding a breaking wave. Origin Bodyboarding originates from an ancient form of riding waves (surfing) on one's belly. Indigenous Polynesians rode "''alaia''" (pronounced ah-lie-ah) boards either on their belly, knees, or feet (in rare instances). ''Alaia'' boards were generally made from the wood of '' Acacia koa'' and varied in length and shape. They are distinct from the modern stand-up surfboards in that they had no ventral fins. Captain Cook recorded seeing Hawaiian villagers riding such boards when he came to Hawaii in 1778. The boards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow
Snow comprises individual ice crystals that grow while suspended in the atmosphere An atmosphere () is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. ...—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or Sublimation (phase transition), sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes Nucleation, nucleate around particles in the atmosphere by attracting supercooling, supercooled water droplets, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sled
A sled, skid, sledge, or sleigh is a land vehicle that slides across a surface, usually of ice or snow. It is built with either a smooth underside or a separate body supported by two or more smooth, relatively narrow, longitudinal runners similar in principle to skis. This reduces the amount of friction, which helps to carry heavy loads. Some designs are used to transport passengers or cargo across relatively level ground. Others are designed to go downhill for recreation, particularly by children, or competition. (Compare cross-country skiing with its downhill cousin.) Shades of meaning differentiating the three terms often reflect regional variations depending on historical uses and prevailing climate. In British English, ''sledge'' is the general term, and more common than ''sled''. '' Toboggan'' is sometimes used synonymously with ''sledge'' but more often to refer to a particular type of sledge without runners. ''Sleigh'' refers to a moderate to large-sized, usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sledding
Sledding, sledging or sleighing is a winter sport typically carried out in a prone or seated position on a vehicle generically known as a sled (North American), a sledge (British), or a sleigh. It is the basis of three Olympic sports: luge, skeleton and bobsledding. When practised on sand, it is known as a form of sandboarding. In Russia sledges are used for maritime activities including fishing and commuting from island to island on ice. History The practical use of sleds is ancient and widespread. They were developed in areas with consistent winter snow cover, as vehicles to transport materials and/or people, far more efficiently than wheeled vehicles could in icy and snowy conditions. Early designs included hand-pulled sizes as well as larger dog, horse, or ox drawn versions. Early examples of sleds and sledges were found in the Oseberg Viking ship excavation. The Toboggan sled is also a traditional form of transport used by the Innu and Cree of northern Canada an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sports Equipment
Sports equipment, sporting equipment, also called sporting goods, are the tools, materials, apparel, and gear used to compete in a sport and varies depending on the sport. The equipment ranges from balls, nets, and protective gear like helmets. Sporting equipment can be used as protective gear or a tool used to help the athletes play the sport. Over time, sporting equipment has evolved because sports have started to require more protective gear to prevent injuries. Sporting equipment may be found in any department store or specific sporting equipment shops. History and development of sports Historically many sports players have developed their own sporting equipment over time. For instance, the use of a football dates back to ancient China, between 225 BC and 220 AD. As football remains the most popular sport in the 21st century, the material of the ball has completely changed over the centuries; from being made out of animal skin, to being lined with multiple layers of polyes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racing Vehicles
In sport, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves :wikt:traverse, traversing some distance, but it can be any other task involving speed to reach a specific goal. A race may be run continuously to finish or may be made up of several segments called heats, Race stage, stages or legs. A heat is usually run over the same course at different times. A stage is a shorter section of a much longer course or a Individual time trial, time trial. Early records of races are evident on pottery from ancient Greece, which depicted running men vying for first place. A chariot racing, chariot race is described in Homer's ''Iliad''. Etymology The word ''race'' comes from a Old Norse, Norse word. This Norse word arrived in France during the invading of Normandy and gave the word ''raz'' which means "swift water" in Brittany, as in a mill race; it can be found in "Pointe du Raz" (the most western po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sliding Vehicles
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Sliding may refer to: * Sliding (dance), also floating or gliding, a group of footwork-oriented dance techniques * Slide (baseball), an attempt by a baseball runner to avoid getting tagged out * Sliding (motion) See also * Slide (other) *Slider (other) Slider or Sliders may refer to: Arts * K.K. Slider, a fictional character within the ''Animal Crossing'' franchise * ''The Slider'', a 1972 album by T. Rex * ''Sliders'' (TV series), an American science fiction and fantasy television series * S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
