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Butterfly Stroke
The butterfly (colloquially shortened to fly) is a swimming stroke swum on the chest, with both arms moving symmetrically, accompanied by the butterfly kick (also known as the "dolphin kick"). While other styles like the breaststroke, front crawl, or backstroke can be swum adequately by beginners, the butterfly is a more difficult stroke that requires good technique as well as strong muscles. It is the newest swimming style swum in competition, first swum in 1933 and originating out of the breaststroke. Speed and ergonomics The peak speed of the butterfly is faster than that of the front crawl due to the synchronous pull/push with both arms and legs, which is done quickly. Yet since speed drops significantly during the recovery phase, it is overall slightly slower than front crawl, especially over longer distances. Another reason it is slower is because of the extremely different physical exertion it puts on the swimmer compared to the front crawl. Butterfly stroke without ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Marines Butterfly Stroke
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Iowa
The University of Iowa (UI, U of I, UIowa, or simply Iowa) is a public research university in Iowa City, Iowa, United States. Founded in 1847, it is the oldest and largest university in the state. The University of Iowa is organized into 12 colleges offering more than 200 areas of study and seven professional degrees. On an urban 1,880-acre campus on the banks of the Iowa River, the University of Iowa is classified among "R1: Doctoral Universities – Very high research activity". In fiscal year 2021, research expenditures at Iowa totaled $818 million. The university is best known for its programs in health care, law, and the fine arts, with programs ranking among the top 25 nationally in those areas. The university was the original developer of the Master of Fine Arts degree and it operates the Iowa Writers' Workshop, which has produced 17 of the university's 46 Pulitzer Prize winners. Iowa is a member of the Association of American Universities, the Universities Research A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Turn (swimming)
In swimming, a turn is a reversal of direction of travel by a swimmer. A turn is typically performed when a swimmer reaches the end of a swimming pool but still has one or more remaining pool lengths to swim. Types *Open turn: is where the swimmer touches the wall, with one or two hands depending on the requirement for the stroke, (not grabbing) and brings legs to the wall in a tuck-like position, then turning on the wall to face the opposite end of the pool and pushes off in a streamline position to begin a new lap. Butterfly and breaststroke swimmers must touch with two hands, then one arm is typically dropped into the water to begin the turn while the other comes past the head to complete the turnaround from the wall and then the swimmer will push off into a streamline. See also Butterfly stroke#Turn and finish. *Tumble turn A tumble turn or flip turn is one of the turns in swimming, used to reverse the direction in which the person is swimming. It is done when the swimmer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Over/under Turn
In swimming, a turn is a reversal of direction of travel by a swimmer. A turn is typically performed when a swimmer reaches the end of a swimming pool but still has one or more remaining pool lengths to swim. Types *Open turn: is where the swimmer touches the wall, with one or two hands depending on the requirement for the stroke, (not grabbing) and brings legs to the wall in a tuck-like position, then turning on the wall to face the opposite end of the pool and pushes off in a streamline position to begin a new lap. Butterfly and breaststroke swimmers must touch with two hands, then one arm is typically dropped into the water to begin the turn while the other comes past the head to complete the turnaround from the wall and then the swimmer will push off into a streamline. See also Butterfly stroke#Turn and finish. *Tumble turn A tumble turn or flip turn is one of the turns in swimming, used to reverse the direction in which the person is swimming. It is done when the swimmer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave-making Resistance
Wave-making resistance is a form of drag that affects surface watercraft, such as boats and ships, and reflects the energy required to push the water out of the way of the hull. This energy goes into creating the wave. Physics For small displacement hulls, such as sailboats or rowboats, wave-making resistance is the major source of the marine vessel drag. A salient property of water waves is dispersiveness; i.e., the greater the wavelength, the faster it moves. Waves generated by a ship are affected by her geometry and speed, and most of the energy given by the ship for making waves is transferred to water through the bow and stern parts. Simply speaking, these two wave systems, i.e., bow and stern waves, interact with each other, and the resulting waves are responsible for the resistance. If the resulting wave is large, it carries much energy away from the ship, delivering it to the shore or wherever else the wave ends up or just dissipating it in the water, and that energy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Phelps
Michael Fred Phelps II (born June 30, 1985) is an American former competitive swimmer. He is the most successful and most decorated Olympian of all time with a total of 28 medals. Phelps also holds the all-time records for Olympic gold medals (23), Olympic gold medals in individual events (13), and Olympic medals in individual events (16). When Phelps won eight gold medals at the 2008 Beijing Games, he broke fellow American swimmer Mark Spitz's 1972 record of seven first-place finishes at any single Olympic Games. At the 2004 Summer Olympics in Athens, Phelps already tied the record of eight medals of any color at a single Games by winning six gold and two bronze medals. At the 2012 Summer Olympics in London, Phelps won four gold and two silver medals, and at the 2016 Summer Olympics in Rio de Janeiro, he won five gold medals and one silver. This made him the most successful athlete of the Games for the fourth Olympics in a row. Phelps is the long course world recor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undulatory Locomotion
Undulatory locomotion is the type of motion characterized by wave-like movement patterns that act to propel an animal forward. Examples of this type of gait include crawling in snakes, or swimming in the lamprey. Although this is typically the type of gait utilized by limbless animals, some creatures with limbs, such as the salamander, forgo use of their legs in certain environments and exhibit undulatory locomotion. In robotics this movement strategy is studied in order to create novel robotic devices capable of traversing a variety of environments. Environmental interactions In limbless locomotion, forward locomotion is generated by propagating flexural waves along the length of the animal's body. Forces generated between the animal and surrounding environment lead to a generation of alternating sideways forces that act to move the animal forward. These forces generate thrust and drag. Hydrodynamics Simulation predicts that thrust and drag are dominated by viscous forces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swimming At The 1956 Summer Olympics
At the 1956 Summer Olympics in Melbourne, 13 swimming events were contested, seven for men and six for women. There was a total of 235 participants from 33 countries competing. For the first time, the butterfly stroke was contested as a separate event. Australia dominated the medal standings with a total of 8 out of a possible 13 gold medals, eventually finishing with 14 medals overall. Medal table Medalists Men's events Women's events Participating nations 235 swimmers from 33 nations competed. References {{DEFAULTSORT:Swimming At The 1956 Summer Olympics 1956 Summer Olympics events 1956 Events January * January 1 – The Anglo-Egyptian Sudan, Anglo-Egyptian Condominium ends in Sudan. * January 8 – Operation Auca: Five U.S. evangelical Christian Missionary, missionaries, Nate Saint, Roger Youderian, Ed McCully, Jim ... 1956 in swimming Swimming competitions in Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin
Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European Union by population within city limits, most populous city, as measured by population within city limits having gained this status after the United Kingdom's, and thus London's, Brexit, departure from the European Union. Simultaneously, the city is one of the states of Germany, and is the List of German states by area, third smallest state in the country in terms of area. Berlin is surrounded by the state of Brandenburg, and Brandenburg's capital Potsdam is nearby. The urban area of Berlin has a population of over 4.5 million and is therefore the most populous urban area in Germany. The Berlin/Brandenburg Metropolitan Region, Berlin-Brandenburg capital region has around 6.2 million inhabitants and is Germany's second-largest metropolitan reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1936 Summer Olympics
The 1936 Summer Olympics ( German: ''Olympische Sommerspiele 1936''), officially known as the Games of the XI Olympiad ( German: ''Spiele der XI. Olympiade'') and commonly known as Berlin 1936 or the Nazi Olympics, were an international multi-sport event held from 1 to 16 August 1936 in Berlin, Germany. Berlin won the bid to host the Games over Barcelona at the 29th IOC Session on 26 April 1931. The 1936 Games marked the second and most recent time the International Olympic Committee gathered to vote in a city that was bidding to host those Games. Later rule modifications forbade cities hosting the bid vote from being awarded the games. To outdo the 1932 Los Angeles Games, Reich Führer Adolf Hitler had a new 100,000-seat track and field stadium built, as well as six gymnasiums and other smaller arenas. The Games were the first to be televised, with radio broadcasts reaching 41 countries.Rader, Benjamin G. "American Sports: From the Age of Folk Games to the Age of Televised ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FINA
FINA (french: Fédération internationale de natation, en, International Swimming Federation, link=yes) (to be renamed as World Aquatics by ) is the international federation recognised by the International Olympic Committee (IOC) for administering international competitions in water sports. It is one of several international federations which administer a given sport or discipline for both the IOC and the international community. It is based in Lausanne, Switzerland. FINA currently oversees competition in six aquatics sports: swimming, diving, high diving, artistic swimming, water polo, and open water swimming. from the FINA website (www.fina.org); retrieved 2013-06-05. FINA also oversees " Masters" competition (for adults) in its disciplines. History FINA was founded on 19 July 1908 in the Manchester Hotel in London, UK at the end of the 1908 Summer Olympics by the Belgian, British, Danish, Finnish, French, German, Hungarian and Swedish Swimming Federations. Numb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simon & Schuster
Simon & Schuster () is an American publishing company and a subsidiary of Paramount Global. It was founded in New York City on January 2, 1924 by Richard L. Simon and M. Lincoln Schuster. As of 2016, Simon & Schuster was the third largest publisher in the United States, publishing 2,000 titles annually under 35 different imprints. History Early years In 1924, Richard Simon's aunt, a crossword puzzle enthusiast, asked whether there was a book of '' New York World'' crossword puzzles, which were very popular at the time. After discovering that none had been published, Simon and Max Schuster decided to launch a company to exploit the opportunity.Frederick Lewis Allen, ''Only Yesterday: An Informal History of the 1920s'', p. 165. . At the time, Simon was a piano salesman and Schuster was editor of an automotive trade magazine. They pooled , equivalent to $ today, to start a company that published crossword puzzles. The new publishing house used "fad" publishing to publish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
