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Hairpin Curve
A hairpin turn (also hairpin bend or hairpin corner) is a bend in a road with a very acute inner angle, making it necessary for an oncoming vehicle to turn about 180° to continue on the road. It is named for its resemblance to a bent metal hairpin. Such turns in ramps and trails may be called switchbacks in American English, by analogy with switchback railways. Description Hairpin turns are often built when a route climbs up or down a steep slope, so that it can travel mostly across the slope with only moderate steepness, and are often arrayed in a zigzag pattern. Highways with repeating hairpin turns allow easier, safer ascents and descents of mountainous terrain than a direct, steep climb and descent, at the price of greater distances of travel and usually lower speed limits, due to the sharpness of the turn. Highways of this style are also generally less costly to build and maintain than highways with tunnels. On occasion, the road may loop completely, using a tunnel or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COLUMBIA RIVER GORGE LOOKING WEST FROM THE SUMMIT OF ROWENA HILLS BETWEEN MOSIER AND THE HOOD RIVER
Columbia most often refers to: * Columbia (personification), the historical personification of the United States * Columbia University, a private university in New York City * Columbia Pictures, an American film studio owned by Sony Pictures * Columbia Sportswear, an American clothing company * Columbia, South Carolina * Columbia, Missouri Columbia may also refer to: Places North America Natural features * Columbia Plateau, a geologic and geographic region in the U.S. Pacific Northwest * Columbia River, in Canada and the United States ** Columbia Bar, a sandbar in the estuary of the Columbia River ** Columbia Country, the region of British Columbia encompassing the northern portion of that river's upper reaches ***Columbia Valley, a region within the Columbia Country ** Columbia Lake, a lake at the head of the Columbia River *** Columbia Wetlands, a protected area near Columbia Lake ** Columbia Slough, along the Columbia watercourse near Portland, Oregon * Glacial Lake Columbia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Padang City
Padang () is the capital and largest city of the Indonesian province of West Sumatra. It had a population of 833,562 at the 2010 CensusBiro Pusat Statistik, Jakarta, 2011. and 909,040 at the 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as at mid 2023 was 942,938 - comprising 473,089 males and 469,849 females.Badan Pusat Statistik, Jakarta, 28 February 2024, ''Kota Padang Dalam Angka 2024'' (Katalog-BPS 1102001.1371) It is the 16th most populous city in Indonesia and the most populous city on the west coast of Sumatra. The Padang metropolitan area is the third most populous metropolitan area in Sumatra with a population of over 1.7 million. Padang is widely known for its Minangkabau culture, cuisine, and sunset beaches. The city had historically been a trading center since the pre-colonial era, in both pepper and gold. The Dutch made contact with the city in the mid 17th century, eventually constructing a fortress and taking over control of the city f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead Man's Curve
Dead Man's Curve is an American nickname for a curve in a road that has claimed many lives because of numerous crashes. Examples * A curve on Sunset Boulevard in Los Angeles memorialized in the hit song " Dead Man's Curve" by Jan and Dean. The song's lyrics place the location of the "Dead Man's Curve" accident at the curve on westbound Sunset Boulevard just west of Doheny Drive in West Hollywood. Voice actor Mel Blanc was severely injured while driving here in 1961, and later sued the City of Los Angeles, prompting a reconstruction of the road. However, the earlier lyrics suggest the long straight starting at "Sunset and Vine" and going past "LaBrea, Schwab's (Pharmacy), and Crescent Heights" (Blvd) would suggest the first curve hit (at a high speed) would be the one at Marmont Lane, before Doheny. (As it is, the "drag" from Vine to Marmont is also 2.4 miles, but entirely straight.) * A series of curves in the 21600 block of Pacific Coast Highway just east of Carbon Canyon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ski (magazine)
Outside Inc., formerly called Pocket Outdoor Media until February 2021, is an American company focused on sports and recreation (especially outdoor sports), fitness and nutrition. It has various ventures such as ''Outside'' magazine, Outside TV, the Gaia GPS and Trailforks trail mapping apps, ''Climbing'' magazine, ''Peloton'' magazine, ''Rock & Ice'' magazine, ''Women's Running'' magazine and ''Yoga Journal''. The company is headquartered in Boulder, Colorado. Overview and history As Pocket Outdoor Media, the company received Series A venture capital financing from Jazz Venture Partners, Next Ventures, and Zone 5 Ventures, and announced the funding together with the acquisition of three divisions of Active Interest Media in June 2020. In February 2021, Pocket Outdoor Media acquired Outside Integrated Media and renamed itself to Outside, Inc. Outside Inc. is headquartered in Boulder, Colorado. As of July 2021, it also had offices in * Carbondale, Colorado * Denver, Colorad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slalom Skiing
Slalom is an alpine skiing and alpine snowboarding discipline, involving skiing between poles or gates. These are spaced more closely than those in giant slalom, super-G, super giant slalom and Downhill (ski competition), downhill, necessitating quicker and shorter turns. Internationally, the sport is contested at the FIS Alpine World Ski Championships, and at the Olympic Winter Games. History The term slalom comes from the Morgedal/Seljord dialect of the Norwegian language, Norwegian word "slalåm": "sla", meaning "slightly inclining hillside", and "låm", meaning "track after skis". The inventors of modern skiing classified their trails according to their difficulty: *''Slalåm'' was a trail used in Telemark by boys and girls not yet able to try themselves on the more challenging runs. *''Ufsilåm'' was a trail with one obstacle (''ufse'') like a jump, a fence, a difficult turn, a gorge, a cliff (often more than high), et cetera. *''Uvyrdslåm'' was a trail with sever ... [...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] |
Slalom Skiing
Slalom is an alpine skiing and alpine snowboarding discipline, involving skiing between poles or gates. These are spaced more closely than those in giant slalom, super-G, super giant slalom and Downhill (ski competition), downhill, necessitating quicker and shorter turns. Internationally, the sport is contested at the FIS Alpine World Ski Championships, and at the Olympic Winter Games. History The term slalom comes from the Morgedal/Seljord dialect of the Norwegian language, Norwegian word "slalåm": "sla", meaning "slightly inclining hillside", and "låm", meaning "track after skis". The inventors of modern skiing classified their trails according to their difficulty: *''Slalåm'' was a trail used in Telemark by boys and girls not yet able to try themselves on the more challenging runs. *''Ufsilåm'' was a trail with one obstacle (''ufse'') like a jump, a fence, a difficult turn, a gorge, a cliff (often more than high), et cetera. *''Uvyrdslåm'' was a trail with sever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillclimbing (railway)
Hillclimbing is a problem faced by railway systems when a load must be carried up an incline. While railways have a great ability to haul very heavy loads, this is only possible when the tracks are fairly level. As soon as the gradients increase, the tonnage that can be hauled is greatly diminished. History Early tramways and railways were laid out with very gentle grades because locomotive and horse haulage were so low in tractive effort. The only exception would be with a line that was downhill all the way for loaded traffic. Brakes were very primitive at this early stage. Where a railway has to cross a range of mountains, it is important to lower the summit as much as possible, as this reduces the steepness of the gradients on either side. This can be done with a summit tunnel or a deep summit cutting. A summit tunnel can lower the summit even more, and steeper hills result in shorter tunnels. Also, tunnels cost the same no matter how much overburden there is, while cutt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Transition Curve
A transition curve (also, spiral easement or, simply, spiral) is a spiral-shaped length of highway or track (rail transport), railroad track that is used between sections having different profiles and radii, such as between straightaways (tangents) and curves, or between two different curves. In the horizontal plane, the radius of a transition curve varies continually over its length between the disparate radii of the sections that it joins—for example, from infinite radius at a tangent to the nominal radius of a smooth curve. The resulting spiral provides a gradual, eased transition, preventing undesirable sudden, abrupt changes in centripetal acceleration, lateral (centripetal) acceleration that would otherwise occur without a transition curve. Similarly, on highways, transition curves allow drivers to change steering gradually when entering or exiting curves. Transition curves also serve as a transition in the vertical plane, whereby the elevation of the inside or outside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Continental Divide
The Eastern Continental Divide, Eastern Divide or Appalachian Divide is a drainage divide, hydrological divide in eastern North America that separates the easterly Atlantic Seaboard drainage basin, watershed from the westerly Gulf of Mexico watershed. It is one of six continental hydrological divides of North America which define several drainage basins, each of which drains to a particular body of water. The divide nearly spans the United States from south of Lake Ontario through the Florida peninsula, and consists of raised terrain including the Appalachian Mountains to the north, the southern Piedmont Plateau and lowland ridges in the Atlantic Coastal Plain to the south. Course Northern portion The divide's northern portion winds through the middle of the Appalachian Mountains, either through the interior of the Allegheny Plateau or along the Allegheny Mountains. In this portion, the western drainage of the divide flows into the watersheds of the Allegheny River, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blair County, Pennsylvania
Blair County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 122,822. Its county seat is Hollidaysburg, and its largest city is Altoona. The county was created on February 26, 1846, from parts of Huntingdon and Bedford counties. The county is part of the Southwest region of the commonwealth. Blair County comprises the Altoona, PA metropolitan statistical area. It is also part of the Altoona-Huntingdon, PA Combined Statistical Area, which includes Blair and Huntingdon counties. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.2%) is water. Blair County is one of the 423 counties served by the Appalachian Regional Commission, and it is identified as part of "Greater Appalachia" by Colin Woodard in his book '' American Nations: A History of the Eleven Rival Regional Cultures of North America''. Features * Brush Mountain * Logan Valley * Morrison Cove * Tussey Mountain Adjacent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horseshoe Curve (Pennsylvania)
The Horseshoe Curve is a three-track railroad Horseshoe curve, curve on Norfolk Southern Railway's Pittsburgh Line in Blair County, Pennsylvania, Blair County, Pennsylvania. The curve is roughly long and in diameter. Completed in 1854 by the Pennsylvania Railroad as a way to reduce the westbound grade to the summit of the Allegheny Mountains, it replaced the time-consuming Allegheny Portage Railroad, which was the only other route across the mountains for large vehicles. The curve was later owned and used by three Pennsylvania Railroad successors: Penn Central Transportation Company, Penn Central, Conrail, and Norfolk Southern Railway, Norfolk Southern. Horseshoe Curve has long been a tourist attraction. A trackside observation park was completed in 1879. The park was renovated and a visitor center built in the early 1990s. The Railroaders Memorial Museum in Altoona, Pennsylvania, Altoona manages the center, which has exhibits pertaining to the curve. The Horseshoe Curve was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
