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Powder Skiing
Powder skiing is a Recreation, recreational activity that involves skiing ungroomed trails located inside of avalanche control or Ski patrol, ski patrol boundaries. History In the Rocky Mountains, Rocky Mountain Range of the Western United States, powder skiing is a common term used among expert skiers. Alf Engen, an early contributor to constructing 27 ski resorts in the Rocky Mountain Range, is regarded as the pioneer of powder skiing. The skiing public at Alta Ski Area, Alta Ski Resort first started in the 1940s. Powder skiing and general skiing techniques, such as the Arlberg technique, Alberg technique, can be categorized by the Fall line (topography), fall line. Technique The powder skiing technique is a broad term with a wide range of sub-techniques. Powder skiing requires having equal balance from side to side to stay upright. Alpine Alpine skiing techniques, used on groomed trails, can be modified for skiing in powder snow by lifting skis to create "float." Accepte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recreation
Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for happiness, enjoyment, amusement, or pleasure and are considered to be "fun". Etymology The term ''recreation'' appears to have been used in English first in the late 14th century, first in the sense of "refreshment or curing of a sick person", and derived turn from Latin (''re'': "again", ''creare'': "to create, bring forth, beget"). Prerequisites to leisure People spend their time on activities of daily living, Employment, work, sleep, social duties and leisure, the latter time being free from prior commitments to physiologic or social needs, a prerequisite of recreation. Leisure has increased with increased longevity and, for many, with decreased hours spent for physical and economic survival, yet others argue that time pressure has increased for modern people, as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powder Telemark
A powder is a dry solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms ''powder'' and ''granular'' are sometimes used to distinguish separate classes of material. In particular, ''powders'' refer to those granular materials that have the finer grain sizes, and that therefore have a greater tendency to form clumps when flowing. ''Granulars'' refer to the coarser granular materials that do not tend to form clumps except when wet. Types Many manufactured goods come in powder form, such as flour, sugar, ground coffee, powdered milk, copy machine toner, gunpowder, cosmetic powders, and some pharmaceuticals. In nature, dust, fine sand and snow, volcanic ash, and the top layer of the lunar regolith are also examples. Because of their importance to industry, medicine and earth science, powders have been studied in great detail by chemical engineers, mechanical engineers, ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy
Buoyancy (), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid). In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus, the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. The pressure difference results in a net upward force on the object. The magnitude of the force is proportional to the pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the submerged volume of the object, i.e. the Displacement (fluid), displaced fluid. For this reason, an object with average density greater than the surrounding fluid tends to sink because its weight is greater than the weight of the fluid it displaces. If the objec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masikryong North Korea Ski Resort (12300018424)
Masikryong Ski Resort () is a ski resort at the summit of the Taehwa Peak () some outside Wonsan City in Kangwon Province, North Korea. According to the official project plan, the first stage of the development cost US$35,340,000 (£21 million; €25.5 million) and included construction of a luxury hotel, ice rink, swimming pool and restaurants. Official revenue forecasts suggest that 5,000 people will visit each day, generating an estimated annual income of $18,750,000 (£11.1 million; €13.5 million). The Masikryong (literally, "horse-resting pass") project was initiated by the North Korean government as part of a drive to "make people not only possess strong physiques and sound mentality, but also enjoy their sports and cultural lives in a world’s advanced condition ''(sic)''." Despite political tensions with neighbouring South Korea, leaders in the North hoped to host some events at the 2018 Winter Olympics. Constructed in just ten months, North Korea's first public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dick Durrance
Richard Henry Durrance (October 23, 1914 – June 13, 2004) was a 17-time national championship alpine ski racer and one of the first Americans to compete successfully against Europeans. Durrance was born in Tarpon Springs, Florida, and moved with his family at age 13 in 1928 to Munich, Germany, where he learned to ski at nearby Garmisch-Partenkirchen. Durrance raced competitively in Germany and won the German Junior Alpine Championship in 1932 at age 17. The following year, he learned the newly developed parallel turn from Anton Seelos. With the rise of Hitler, the family returned to the United States and he attended Dartmouth College in 1934 and won at Sestriere, Italy, the first American to dominate at a major European ski race. Durrance also won the U.S. men's downhill, slalom, and combined events in 1937 and was named to the U.S. Olympic Team for the 1936 Winter Olympics, the first to include alpine skiing. The only medal event was the combined and Durrance fin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trajectory
A trajectory or flight path is the path that an object with mass in motion follows through space as a function of time. In classical mechanics, a trajectory is defined by Hamiltonian mechanics via canonical coordinates; hence, a complete trajectory is defined by position and momentum, simultaneously. The mass might be a projectile or a satellite. For example, it can be an orbit — the path of a planet, asteroid, or comet as it travels around a central mass. In control theory, a trajectory is a time-ordered set of states of a dynamical system (see e.g. Poincaré map). In discrete mathematics, a trajectory is a sequence (f^k(x))_ of values calculated by the iterated application of a mapping f to an element x of its source. Physics of trajectories A familiar example of a trajectory is the path of a projectile, such as a thrown ball or rock. In a significantly simplified model, the object moves only under the influence of a uniform gravitational force field. This can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow
Snow consists of individual ice crystals that grow while suspended in the atmosphere—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 Freezing, freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns, and Hard rime, rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shock Absorber
A shock absorber or damper is a mechanical or hydraulics, hydraulic device designed to absorb and Damping ratio, damp shock (mechanics), shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically thermal energy, heat) which is then dissipated. Most shock absorbers are a form of dashpot (a damper which resists motion via viscous friction). Description Pneumatic and hydraulic shock absorbers are used in conjunction with cushions and springs. An automobile shock absorber contains spring-loaded check valves and orifices to control the flow of oil through an internal piston (see below). One design consideration, when designing or choosing a shock absorber, is where that energy will go. In most shock absorbers, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, the hydraulic fluid heats up, while in Pneumatic cylinder, air cylinders, the hot air is usually exhausted to the atmosphere. In other types of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powder Snow
Classifications of snow describe and categorize the attributes of snow-generating weather events, including the individual crystals both in the air and on the ground, and the deposited snow pack as it changes over time. Snow can be classified by describing the weather event that is producing it, the shape of its ice crystals or flakes, how it collects on the ground, and thereafter how it changes form and composition. Depending on the status of the snow in the air or on the ground, a different classification applies. Snowfall arises from a variety of events that vary in intensity and cause, subject to classification by weather bureaus. Some snowstorms are part of a larger weather pattern. Other snowfall occurs from lake effects or atmospheric instability near mountains. Falling snow takes many different forms, depending on atmospheric conditions, especially vapor content and temperature, as it falls to the ground. Once on the ground, snow crystals metamorphose into different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Skiing
Alpine skiing, or downhill skiing, is the pastime of sliding down snow-covered slopes on skis with fixed-heel Ski binding, bindings, unlike other types of skiing (Cross-country skiing, cross-country, Telemark skiing, Telemark, or ski jumping), which use skis with free-heel bindings. Whether for recreation or for sport, it is typically practiced at ski resorts, which provide such services as ski lifts, artificial snow making, snow grooming, restaurants, and ski patrol. "Piste, Off-piste" skiers—those skiing outside ski area boundaries—may employ snowmobiles, heliskiing, helicopters or Snowcat, snowcats to deliver them to the top of a slope. Back country skiing, Back-country skiers may use specialized equipment with a free-heel mode, including 'sticky' Ski skins, skins on the bottoms of the skis to stop them sliding backwards during an ascent, then locking the heel and removing the skins for their descent. Alpine ski racing has been held at the Alpine skiing at the Win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackcomb Powder (20278899) , a fell in the Lake District of England
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Blackcomb may refer to: * Blackcomb Peak, a mountain in British Columbia *Whistler Blackcomb ski resort ** Blackcomb Village, a ski village inside the ski resort * Blackcomb Glacier Provincial Park * Windows Blackcomb, a canceled version of Microsoft Windows *Black Combe Black Combe is a fell in the south-west corner of the Lake District National Park, England, just from the Irish Sea. It lies near the west coast of Cumbria in the district of Cumberland and more specifically, in the ancient district of Millom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skiing
Skiing is the use of skis to glide on snow for basic transport, a recreational activity, or a competitive winter sport. Many types of competitive skiing events are recognized by the International Olympic Committee (IOC), and the International Ski and Snowboard Federation (FIS). History Skiing has a history of almost five millennia. Although modern skiing has evolved from beginnings in Scandinavia, it may have been practiced more than 100 centuries ago in the Altai Mountains, according to an interpretation of ancient paintings. However, this continues to be debated. The word "ski" comes from the Old Norse word "skíð" which means to "split piece of wood or firewood". Asymmetrical skis were used in northern Finland and Sweden until at least the late 19th century. On one foot, the skier wore a long straight non-arching ski for sliding, and a shorter ski was worn on the other foot for kicking. The underside of the short ski was either plain or covered with animal skin to aid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
