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Cross-country Skiing Trail
A cross-country skiing trail or ''loipe''From german: Loipe or ''Langlaufloipe'', pl. –''n'', ''loipe'' is a loanword in English-language travel guides, referring to cross-country ski trails in Europe. It is a Germanization of the Norwegian word, ''løype,'' which originally meant a steep channel used to slide logs downhill into the valleys and which in turn came from the verb ''laupe'' ("run") whose causative ''løype,'' can translate as "to get running". is a route that has been laid out, constructed and maintained specifically for cross-country skiing. Trails may extend point-to-point, but are more typically loops for recreational use or for competition. Until the mid-20th Century, trails were tracked by the passage of skiers. More recently, snow groomers set tracks for classic skiing and smooth lanes for skate skiing. Recreational Cross-country ski venues often comprise a system of trails or ''loipes'' of varying length and difficulty that loop back to a starting point. Of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross-Country Ski Association Of America-Easy
Cross country or cross-country may refer to: Places * Cross Country, Baltimore, a neighborhood in northwest Baltimore, Maryland * Cross County Parkway, an east–west parkway in Westchester County, NY * Cross County Shopping Center, a mall in Yonkers, NY ** The Mall at Cross County, a smaller mall adjacent to the Cross County Shopping Center in Yonkers, NY Media and entertainment * ''CMT Cross Country'', an American television series * ''Cross Country'' (album), an album by Webb Pierce * Cross Country (band), a band formed in 1973 * ''Cross Country'' (film), a 1983 drama film starring Nina Axelrod * Cross-Country (G.I. Joe), a fictional character in the G.I. Joe universe * ''Cross Country'' (novel), a 2008 novel by James Patterson * '' Cross Country USA'' (1988), an edutainment videogame by Didatech Sports * Cross country running, a sport in which teams of runners compete to complete a course over open or rough terrain * Cross-country cycling, the most common discipline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sintering
Clinker nodules produced by sintering Sintering or frittage is the process of compacting and forming a solid mass of material by pressure or heat without melting it to the point of liquefaction. Sintering happens as part of a manufacturing process used with metals, ceramics, plastics, and other materials. The atoms in the materials diffuse across the boundaries of the particles, fusing the particles together and creating one solid piece. Because the sintering temperature does not have to reach the melting point of the material, sintering is often chosen as the shaping process for materials with extremely high melting points such as tungsten and molybdenum. The study of sintering in metallurgical powder-related processes is known as powder metallurgy. An example of sintering can be observed when ice cubes in a glass of water adhere to each other, which is driven by the temperature difference between the water and the ice. Examples of pressure-driven sintering are the compact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Radiation
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around 1 millimeter (300 GHz) to the nominal red edge of the visible spectrum, around 700 nanometers (430 THz). Longer IR wavelengths (30 μm-100 μm) are sometimes included as part of the terahertz radiation range. Almost all black-body radiation from objects near room temperature is at infrared wavelengths. As a form of electromagnetic radiation, IR propagates energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires emit invisible heat; in 1681 the pioneering experimenter Edme Mariotte showed that glass, though transparent to sunlight, obstructed radiant heat. In 1800 the astronomer Sir William Herschel discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra-violet Radiation
Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack the energy to ionize atoms, it can cause chemical reactions and causes many substances to glow or fluoresce. Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules. Short-wave ultraviolet light damages DNA and sterilizes surfaces with which it comes into contact. For hum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperature Gradient
A temperature gradient is a physical quantity that describes in which direction and at what rate the temperature changes the most rapidly around a particular location. The temperature gradient is a dimensional quantity expressed in units of degrees (on a particular temperature scale) per unit length. The SI unit is kelvin per meter (K/m). Temperature gradients in the atmosphere are important in the atmospheric sciences (meteorology, climatology and related fields). Mathematical description Assuming that the temperature ''T'' is an intensive quantity, i.e., a single-valued, continuous and differentiable function of three-dimensional space (often called a scalar field), i.e., that :T=T(x,y,z) where ''x'', ''y'' and ''z'' are the coordinates of the location of interest, then the temperature gradient is the vector quantity defined as :\nabla T = \begin , , \end Physical processes Climatology On a global and annual basis, the dynamics of the atmosphere (and the oceans) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross Country Canada
Nordiq Canada is the governing federation for cross-country skiing in Canada. History The first governing body for cross-country skiing in Canada was the Canadian Amateur Skiers Association (CASA), founded in 1920. This body covered all disciplines of skiing; alpine, cross-country, and jumping. CASA changed to Canadian Skiers Association (CSA) and in 1969 cross-country skiing separated from the CSA, becoming its own discipline. Biathlon was part of the CCC for 9 years until it left and formed its own governing body. The CCC remains Canada's governing body for cross-country skiing. In 2019, Cross Country Ski de Fond Canada officially rebranded and is now known as Nordiq Canada. See also * Canadian Snowboard Federation, Canadian snowboard sports federation * Canadian Freestyle Ski Association, Canadian freestyle skiing sports federation * Nordic Combined Ski Canada, Canadian Nordic combined skiing sports federation * Ski Jumping Canada, Canadian ski jumping sports federation * A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowmobile
A snowmobile, also known as a Ski-Doo, snowmachine, sled, motor sled, motor sledge, skimobile, or snow scooter, is a motorized vehicle designed for winter travel and recreation on snow. It is designed to be operated on snow and ice and does not require a road or trail, but most are driven on open terrain or trails. Snowmobiling is a sport that many people have taken on as a serious hobby. Older snowmobiles could generally accommodate two people; however, most snowmobiles manufactured since the 1990s have been designed to only accommodate one person. Snowmobiles built with the ability to accommodate two people are referred to as "2-up" snowmobiles or "touring" models and make up an extremely small share of the market. Most snowmobiles do not have any enclosures, except for a windshield, and their engines normally drive a continuous track at the rear. Skis at the front provide directional control. Early snowmobiles used simple rubber tracks, but modern snowmobiles' tracks are usu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Course Layout Of The Cross-country Ski Events At The Olympic Winter Games At Whistler Winter Park
Course may refer to: Directions or navigation * Course (navigation), the path of travel * Course (orienteering), a series of control points visited by orienteers during a competition, marked with red/white flags in the terrain, and corresponding purple symbols on the map Education * Course (education), a unit of instruction in one subject, lasting one academic term * Course of study, or academic major, a programme of education leading to a degree or diploma Food * Course (food), a set of one or more food items served at once during a meal * Main course, the primary dish in a meal consisting of several courses. Sports * Courses and rules, in show jumpting, an equitation or equestrian obstacle course * Coursing, the pursuit of game or other animals by dogs * Golf course, an area of land designated for the play of golf * La Course by Le Tour de France ("La Course"), a women's professional road course bicycle race that accompanies Le Tour (Tour de France) * Obstacle course, a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictogram Ski Slope Black
A pictogram, also called a pictogramme, pictograph, or simply picto, and in computer usage an icon, is a graphic symbol that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are often used in writing and graphic systems in which the characters are to a considerable extent pictorial in appearance. A pictogram may also be used in subjects such as leisure, tourism, and geography. Pictography is a form of writing which uses representational, pictorial drawings, similarly to cuneiform and, to some extent, hieroglyphic writing, which also uses drawings as phonetic letters or determinative rhymes. Some pictograms, such as Hazards pictograms, are elements of formal languages. "Pictograph" has a different definition in the field of prehistoric art (which includes recent art by traditional societies), where it means art painted on rock surfaces. This is in comparison to petroglyphs, where the images are carved or incised. Such images may or may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross-Country Ski Association Of America-Most Difficult
Cross country or cross-country may refer to: Places * Cross Country, Baltimore, a neighborhood in northwest Baltimore, Maryland * Cross County Parkway, an east–west parkway in Westchester County, NY * Cross County Shopping Center, a mall in Yonkers, NY ** The Mall at Cross County, a smaller mall adjacent to the Cross County Shopping Center in Yonkers, NY Media and entertainment * ''CMT Cross Country'', an American television series * ''Cross Country'' (album), an album by Webb Pierce * Cross Country (band), a band formed in 1973 * ''Cross Country'' (film), a 1983 drama film starring Nina Axelrod * Cross-Country (G.I. Joe), a fictional character in the G.I. Joe universe * ''Cross Country'' (novel), a 2008 novel by James Patterson * '' Cross Country USA'' (1988), an edutainment videogame by Didatech Sports * Cross country running, a sport in which teams of runners compete to complete a course over open or rough terrain * Cross-country cycling, the most common discipline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictogram Ski Slope Red
A pictogram, also called a pictogramme, pictograph, or simply picto, and in computer usage an icon, is a graphic symbol that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are often used in writing and graphic systems in which the characters are to a considerable extent pictorial in appearance. A pictogram may also be used in subjects such as leisure, tourism, and geography. Pictography is a form of writing which uses representational, pictorial drawings, similarly to cuneiform and, to some extent, hieroglyphic writing, which also uses drawings as phonetic letters or determinative rhymes. Some pictograms, such as Hazards pictograms, are elements of formal languages. "Pictograph" has a different definition in the field of prehistoric art (which includes recent art by traditional societies), where it means art painted on rock surfaces. This is in comparison to petroglyphs, where the images are carved or incised. Such images may or may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
