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Patricia Lake (Alberta)
Patricia Lake is a lake in Jasper National Park, Alberta, Canada, near the town of Jasper. It was named for Princess Patricia of Connaught, a granddaughter of Queen Victoria. It is connected by Pyramid Lake road and hiking trails to the town of Jasper, as well as other tourist sites such as Pyramid Lake and Pyramid Mountain. Project Habbakuk Patricia Lake is notable for its involvement during World War II with Project Habbakuk, a plan to build an unsinkable aircraft carrier from an ice-based composite material termed "Pykrete". Initial studies of natural lake ice had been carried out at Lake Louise. In January 1943, Patricia Lake was chosen as the test site for building a prototype vessel. The planned vessel was to be long and the prototype was to be a 1:10 scale model of this. In fact, the beam was to approximately this scale, but the length was only 60 feet, about a third of scale. Patricia Lake was chosen for this work on account of having rail connections at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jasper National Park
Jasper National Park is a national park in Alberta, Canada. It is the largest national park within Alberta's Rocky Mountains spanning . It was established as a national park in 1930 and declared a UNESCO World Heritage Site in 1984. Its location is north of Banff National Park and west of Edmonton. The park contains the glaciers of the Columbia Icefield, springs, lakes, waterfalls and mountains. History First Nations The territory encompassed by what is now Jasper National Park has been inhabited since time immemorial by Nakoda, Cree, Secwépemc, and Dane-zaa peoples. Plainview projectile points have been found at the head of Jasper Lake, dating back to between 8000 and 7000 BCE. In the centuries between then and the establishment of the park, First Nations land use has fluctuated according to climatic variations over the long term, and according to cyclical patterns of ungulate population numbers, particularly elk, moose, mule deer, and occasionally caribou. Starting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Habbakuk
Project Habakkuk or Habbakuk (spelling varies) was a plan by the British during the Second World War to construct an aircraft carrier out of pykrete (a mixture of wood pulp and ice) for use against German U-boats in the mid-Atlantic, which were beyond the flight range of land-based planes at that time. The plan was to create what would have been the largest ship ever at 600 m long and would indeed have been much bigger than even USS ''Enterprise'', the largest naval vessel ever, at 342 m long.The idea came from Geoffrey Pyke, who worked for Combined Operations Headquarters. After promising scale tests and the creation of a prototype on Patricia Lake, Jasper National Park, in Alberta, Canada, the project was shelved due to rising costs, added requirements, and the availability of longer-range aircraft and escort carriers which closed the Mid-Atlantic gap that the project was intended to address. History Initial concept Geoffrey Pyke was an old friend of J. D. Bernal and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conscientious Objector
A conscientious objector (often shortened to conchie) is an "individual who has claimed the right to refuse to perform military service" on the grounds of freedom of thought, conscience, or religion. The term has also been extended to objecting to working for the military–industrial complex due to a crisis of conscience. In some countries, conscientious objectors are assigned to an alternative civilian service as a substitute for conscription or military service. A number of organizations around the world celebrate the principle on May 15 as International Conscientious Objection Day. On March 8, 1995, the United Nations Commission on Human Rights resolution 1995/83 stated that "persons performing military service should not be excluded from the right to have conscientious objections to military service". This was re-affirmed on April 22, 1998, when resolution 1998/77 recognized that "persons lreadyperforming military service may ''develop'' conscientious objections". H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doukhobor
The Doukhobours or Dukhobors (russian: духоборы / духоборцы, dukhobory / dukhobortsy; ) are a Spiritual Christian ethnoreligious group of Russian origin. They are one of many non-Orthodox ethno-confessional faiths in Russia and are often categorized as "folk-Protestants", Spiritual Christians, sectarians, and heretics. Doukhobours are pacifist Christians who lived in their own villages, rejected personal materialism, worked together, and developed a tradition of oral history, memorizing, hymn-singing, and verse. Before 1886, the Doukhobors had a series of single leaders. The origin of the Doukhobors is uncertain; they first appear in first written records from 1701, although some scholars suspect the group has earlier origins. Doukhobors reject the Russian Orthodox priesthood, the use of icons, and all associated church rituals. Doukhobors believe the Bible alone is not enough to reach divine revelation and that doctrinal conflicts can interfere with their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mennonite
Mennonites are groups of Anabaptist Christian church communities of denominations. The name is derived from the founder of the movement, Menno Simons (1496–1561) of Friesland. Through his writings about Reformed Christianity during the Radical Reformation, Simons articulated and formalized the teachings of earlier Swiss founders, with the early teachings of the Mennonites founded on the belief in both the mission and ministry of Jesus, which the original Anabaptist followers held with great conviction, despite persecution by various Roman Catholic and Mainline Protestant states. Formal Mennonite beliefs were codified in the Dordrecht Confession of Faith in 1632, which affirmed "the baptism of believers only, the washing of the feet as a symbol of servanthood, church discipline, the shunning of the excommunicated, the non-swearing of oaths, marriage within the same church, strict pacifistic physical nonresistance, anti-Catholicism and in general, more emphasis on "true Chris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Louise (Alberta)
Lake Louise (named Ho-run-num-nay (Lake of the Little Fishes) by the Stoney Nakota First Nations people) is a glacial lake within Banff National Park in Alberta, Canada. It is located west of the Hamlet of Lake Louise and the Trans-Canada Highway The Trans-Canada Highway ( French: ; abbreviated as the TCH or T-Can) is a transcontinental federal–provincial highway system that travels through all ten provinces of Canada, from the Pacific Ocean on the west coast to the Atlantic Ocean o ... (Alberta Highway 1, Highway 1). Lake Louise is named after the Princess Louise, Duchess of Argyll, Princess Louise Caroline Alberta (1848–1939), the fourth daughter of Victoria of the United Kingdom, Queen Victoria and the wife of the John Campbell, 9th Duke of Argyll, Marquess of Lorne, who was the Governor General of Canada from 1878 to 1883. The turquoise colour of the water comes from rock flour carried into the lake by melt-water from the glaciers that overlook the lake. The l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pykrete
Pykrete is a frozen ice composite, originally made of approximately 14% sawdust or some other form of wood pulp (such as paper) and 86% ice by weight (6 to 1 by weight). During World War II, Geoffrey Pyke proposed it as a candidate material for a supersized aircraft carrier for the British Royal Navy. Pykrete features unusual properties, including a relatively slow melting rate due to its low thermal conductivity, as well as a vastly improved strength and toughness compared to ordinary ice. These physical properties can make the material comparable to concrete, as long as the material is kept frozen. Pykrete is slightly more difficult to form than concrete, as it expands during the freezing process. However, it can be repaired and maintained using seawater as a raw material. The mixture can be moulded into any shape and frozen, and it will be tough and durable, as long as it is kept at or below freezing temperature. Resistance to gradual creep or sagging is improved by lowering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Carrier
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry numerous fighters, strike aircraft, helicopters, and other types of aircraft. While heavier aircraft such as fixed-wing gunships and bombers have been launched from aircraft carriers, these aircraft have not successfully landed on a carrier. By its diplomatic and tactical power, its mobility, its autonomy and the variety of its means, the aircraft carrier is often the centerpiece of modern combat fleets. Tactically or even strategically, it replaced the battleship in the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alberta
Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Territories (NWT) to the north, and the U.S. state of Montana to the south. It is one of the only two landlocked provinces in Canada (Saskatchewan being the other). The eastern part of the province is occupied by the Great Plains, while the western part borders the Rocky Mountains. The province has a predominantly continental climate but experiences quick temperature changes due to air aridity. Seasonal temperature swings are less pronounced in western Alberta due to occasional Chinook winds. Alberta is the fourth largest province by area at , and the fourth most populous, being home to 4,262,635 people. Alberta's capital is Edmonton, while Calgary is its largest city. The two are Alberta's largest census metropolitan areas. More tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramid Mountain (Alberta)
Pyramid Mountain is a mountain in Jasper National Park, Alberta, Canada, named for its pyramid-like shape. James Hector named the mountain in 1859 due to its appearance from the Athabasca River valley on the eastern side of the peak. Part of the Victoria Cross Ranges in the Athabasca River Valley the mountain is in the major headwaters for the Athabasca River. The peak is just under north-west of the town of Jasper. The mountain is a relatively easy scramble on the eastern slopes. These slopes can be reached by following a steep fire road from the parking lot at Pyramid Lake, southeast of the peak. Based on the Köppen climate classification, Pyramid Mountain is located in a subarctic climate zone with cold, snowy winters, and mild summers. Temperatures can drop below -20 °C with wind chill factors below -30 °C. See also *Geography of Alberta Alberta is one of the thirteen provinces and territories of Canada. Located in Western Canada, the province has an a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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