Swimming is an individual or team sport that requires the use of one's entire body to move through water. The sport takes place in open water. Competitive swimming is one of the most popular Olympic sports, with varied distance events in butterfly, breaststroke and individual medley. In addition to these individual events, four swimmers can take part in either a freestyle or medley relay. A medley relay consists of four swimmers; the order for a medley relay is: backstroke, breaststroke and freestyle. Swimming each stroke requires a set of specific techniques. There are regulations on what types of swimsuits, caps and injury tape that are allowed at competitions. Although it is possible for competitive swimmers to incur several injuries from the sport, such as tendinitis in the shoulders or knees, there are multiple health benefits associated with the sport. Evidence of recreational swimming in prehistoric times has been found, with the earliest evidence dating to Stone Age paintings from around 10,000 years ago.
Written references date from 2000 BC, with some of the earliest references to swimming including the Iliad, the Odyssey, the Bible, the Quran and others. In 1538, Nikolaus Wynmann, a Swiss professor of languages, wrote the first book about swimming, The Swimmer or A Dialogue on the Art of Swimming. Swimming emerged as a competitive recreational activity in the 1830s in England. In 1828, the first indoor swimming pool, St George's Baths was opened to the public. By 1837, the National Swimming Society was holding regular swimming competitions in six artificial swimming pools, built around London; the recreational activity grew in popularity and by 1880, when the first national governing body, the Amateur Swimming Association was formed, there were over 300 regional clubs in operation across the country. In 1844 two Native American participants at a swimming competition in London introduced the front crawl to a European audience. Sir John Arthur Trudgen picked up the hand-over stroke from some South American natives and debuted the new stroke in 1873, winning a local competition in England.
His stroke is still regarded as the most powerful to use today. Captain Matthew Webb was the first man to swim the English Channel, in 1875. Using the breaststroke technique, he swam the channel 21.26 miles in 45 minutes. His feat was not replicated or surpassed for the next 36 years, until T. W. Burgess made the crossing in 1911. Other European countries established swimming federations; the first European amateur swimming competitions were in 1889 in Vienna. The world's first women's swimming championship was held in Scotland in 1892. Men's swimming became part of the first modern Olympic Games in 1896 in Athens. In 1902, the Australian Richmond Cavill introduced freestyle to the Western world. In 1908, the world swimming association, Fédération Internationale de Natation, was formed. Women's swimming was introduced into the Olympics in 1912. Butterfly was developed in the 1930s and was at first a variant of breaststroke, until it was accepted as a separate style in 1952. Competitive swimming became popular in the 19th century.
The goal of high level competitive swimming is to break personal or world records while beating competitors in any given event. Swimming in competition should create the least resistance in order to obtain maximum speed. However, some professional swimmers who do not hold a national or world ranking are considered the best in regard to their technical skills. An athlete goes through a cycle of training in which the body is overloaded with work in the beginning and middle segments of the cycle, the workload is decreased in the final stage as the swimmer approaches competition; the practice of reducing exercise in the days just before an important competition is called tapering. Tapering is used to give the swimmer's body some rest without stopping exercise completely. A final stage is referred to as "shave and taper": the swimmer shaves off all exposed hair for the sake of reducing drag and having a sleeker and more hydrodynamic feel in the water. Additionally, the "shave and taper" method refers to the removal of the top layer of "dead skin", which exposes the newer and richer skin underneath.
This helps to "shave" off mere milliseconds on your time. Swimming is an event at the Summer Olympic Games, where male and female athletes compete in 16 of the recognized events each. Olympic events are held in a 50-meter pool, called a long course pool. There are forty recognized individual swimming events in the pool; the international governing body for competitive swimming is the Fédération Internationale de Natation, better known as FINA. In open water swimming, where the events are swum in a body of open water, there are 5 km, 10 km and 25 km events for men and women. However, only the 10 km event is included in the Olympic schedule, again for both women. Open-water competitions are separate to other swimming competitions with the exception of the World Championships and the Olympics. In competitive swimming, four major styles have been established; these have been stable over the last 30–40 years with minor improvements. They are: Butterfly Backstroke
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between green on the spectrum of visible light; the eye perceives blue when observing light with a dominant wavelength between 450 and 495 nanometres. Most blues contain a slight mixture of other colours; the clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called. Distant objects appear. Blue has been an important colour in decoration since ancient times; the semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to white porcelain. In the Middle Ages, European artists used it in the windows of Cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America.
In the 19th century, synthetic blue dyes and pigments replaced mineral pigments and synthetic dyes. Dark blue became a common colour for military uniforms and in the late 20th century, for business suits; because blue has been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union. Surveys in the US and Europe show that blue is the colour most associated with harmony, confidence, infinity, the imagination and sometimes with sadness. In US and European public opinion polls it is the most popular colour, chosen by half of both men and women as their favourite colour; the same surveys showed that blue was the colour most associated with the masculine, just ahead of black, was the colour most associated with intelligence, knowledge and concentration. Blue is the colour of light between green on the visible spectrum. Hues of blue include ultramarine, closer to violet. Blue varies in shade or tint. Darker shades of blue include ultramarine, cobalt blue, navy blue, Prussian blue.
Blue pigments were made from minerals such as lapis lazuli and azurite, blue dyes were made from plants. Today most blue dyes are made by a chemical process; the modern English word blue comes from Middle English bleu or blewe, from the Old French bleu, a word of Germanic origin, related to the Old High German word blao. In heraldry, the word azure is used for blue. In Russian and some other languages, there is no single word for blue, but rather different words for light blue and dark blue. See Colour term. Several languages, including Japanese, Thai and Lakota Sioux, use the same word to describe blue and green. For example, in Vietnamese the colour of both tree leaves and the sky is xanh. In Japanese, the word for blue is used for colours that English speakers would refer to as green, such as the colour of a traffic signal meaning "go". Linguistic research indicates. Colour names developed individually in natural languages beginning with black and white, adding red, only much – as the last main category of colour accepted in a language – adding the colour blue when blue pigments could be manufactured reliably in the culture using that language.
Human eyes perceive blue when observing light which has a dominant wavelength of 450–495 nanometres. Blues with a higher frequency and thus a shorter wavelength look more violet, while those with a lower frequency and a longer wavelength appear more green. Pure blue, in the middle, has a wavelength of 470 nanometres. Isaac Newton included blue as one of the seven colours in his first description the visible spectrum, He chose seven colours because, the number of notes in the musical scale, which he believed was related to the optical spectrum, he included indigo, the hue between blue and violet, as one of the separate colours, though today it is considered a hue of blue. In painting and traditional colour theory, blue is one of the three primary colours of pigments, which can be mixed to form a wide gamut of colours. Red and blue mixed together form violet and yellow together form green. Mixing all three primary colours together produces a dark grey. From the Renaissance onwards, painters used this system to create their colours.
The RYB model was used for colour printing by Jacob Christoph Le Blon as early as 1725. Printers discovered that more accurate colours could be created by using combinations of magenta, cyan and black ink, put onto separate inked plates and overlaid one at a time onto paper; this method could produce all the colours in the spectrum with reasonable accuracy. In the 19th century the Scottish physicist James Clerk Maxwell found a new way of explaining colours, by the wa
Basketball is a team sport in which two teams, most of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop while preventing the opposing team from shooting through their own hoop. A field goal is worth two points, unless made from behind the three-point line, when it is worth three. After a foul, timed play stops and the player fouled or designated to shoot a technical foul is given one or more one-point free throws; the team with the most points at the end of the game wins, but if regulation play expires with the score tied, an additional period of play is mandated. Players advance the ball by bouncing it while walking or running or by passing it to a teammate, both of which require considerable skill. On offense, players may use a variety of shots -- a dunk, it is a violation to lift or drag one's pivot foot without dribbling the ball, to carry it, or to hold the ball with both hands resume dribbling.
The five players on each side at a time fall into five playing positions: the tallest player is the center, the tallest and strongest is the power forward, a shorter but more agile big man is the small forward, the shortest players or the best ball handlers are the shooting guard and the point guard, who implements the coach's game plan by managing the execution of offensive and defensive plays. Informally, players may play three-on-three, two-on-two, one-on-one. Invented in 1891 by Canadian-American gym teacher James Naismith in Springfield, United States, basketball has evolved to become one of the world's most popular and viewed sports; the National Basketball Association is the most significant professional basketball league in the world in terms of popularity, salaries and level of competition. Outside North America, the top clubs from national leagues qualify to continental championships such as the Euroleague and FIBA Americas League; the FIBA Basketball World Cup and Men's Olympic Basketball Tournament are the major international events of the sport and attract top national teams from around the world.
Each continent hosts regional competitions for national teams, like FIBA AmeriCup. The FIBA Women's Basketball World Cup and Women's Olympic Basketball Tournament feature top national teams from continental championships; the main North American league is the WNBA, whereas strongest European clubs participate in the EuroLeague Women. In early December 1891, Canadian James Naismith, a physical education professor and instructor at the International Young Men's Christian Association Training School in Springfield, was trying to keep his gym class active on a rainy day, he sought a vigorous indoor game to keep his students occupied and at proper levels of fitness during the long New England winters. After rejecting other ideas as either too rough or poorly suited to walled-in gymnasiums, he wrote the basic rules and nailed a peach basket onto a 10-foot elevated track. In contrast with modern basketball nets, this peach basket retained its bottom, balls had to be retrieved manually after each "basket" or point scored.
Basketball was played with a soccer ball. These round balls from "association football" were made, at the time, with a set of laces to close off the hole needed for inserting the inflatable bladder after the other sewn-together segments of the ball's cover had been flipped outside-in; these laces could dribbling to be unpredictable. A lace-free ball construction method was invented, this change to the game was endorsed by Naismith; the first balls made for basketball were brown, it was only in the late 1950s that Tony Hinkle, searching for a ball that would be more visible to players and spectators alike, introduced the orange ball, now in common use. Dribbling was not part of the original game except for the "bounce pass" to teammates. Passing the ball was the primary means of ball movement. Dribbling was introduced but limited by the asymmetric shape of early balls. Dribbling was common by 1896, with a rule against the double dribble by 1898; the peach baskets were used until 1906 when they were replaced by metal hoops with backboards.
A further change was soon made, so the ball passed through. Whenever a person got the ball in the basket, his team would gain a point. Whichever team got; the baskets were nailed to the mezzanine balcony of the playing court, but this proved impractical when spectators in the balcony began to interfere with shots. The backboard was introduced to prevent this interference. Naismith's handwritten diaries, discovered by his granddaughter in early 2006, indicate that he was nervous about the new game he had invented, which incorporated rules from a children's game called duck on a rock, as many had failed before it. Frank Mahan, one of the players from the original
Times Higher Education World University Rankings
Times Higher Education World University Rankings is an annual publication of university rankings by Times Higher Education magazine. The publisher had collaborated with Quacquarelli Symonds to publish the joint THE–QS World University Rankings from 2004 to 2009 before it turned to Thomson Reuters for a new ranking system; the publication now comprises the world's overall and reputation rankings, alongside three regional league tables, Latin America, BRICS & Emerging Economies which are generated by different weightings. THE Rankings is considered as one of the most observed university rankings together with Academic Ranking of World Universities and QS World University Rankings, it is praised for having a new, improved ranking methodology since 2010. The creation of the original Times Higher Education–QS World University Rankings was credited in Ben Wildavsky's book, The Great Brain Race: How Global Universities are Reshaping the World, to then-editor of Times Higher Education, John O'Leary.
Times Higher Education chose to partner with educational and careers advice company QS to supply the data. After the 2009 rankings, Times Higher Education took the decision to break from QS and signed an agreement with Thomson Reuters to provide the data for its annual World University Rankings from 2010 onwards; the publication developed a new rankings methodology in consultation with its readers, its editorial board and Thomson Reuters. Thomson Reuters will collect and analyse the data used to produce the rankings on behalf of Times Higher Education; the first ranking was published in September 2010. Commenting on Times Higher Education's decision to split from QS, former editor Ann Mroz said: "universities deserve a rigorous and transparent set of rankings – a serious tool for the sector, not just an annual curiosity." She went on to explain the reason behind the decision to continue to produce rankings without QS' involvement, saying that: "The responsibility weighs heavy on our shoulders...we feel we have a duty to improve how we compile them."Phil Baty, editor of the new Times Higher Education World University Rankings, admitted in Inside Higher Ed: "The rankings of the world's top universities that my magazine has been publishing for the past six years, which have attracted enormous global attention, are not good enough.
In fact, the surveys of reputation, which made up 40 percent of scores and which Times Higher Education until defended, had serious weaknesses. And it's clear that our research measures favored the sciences over the humanities."He went on to describe previous attempts at peer review as "embarrassing" in The Australian: "The sample was too small, the weighting too high, to be taken seriously." THE published its first rankings using its new methodology on 16 September 2010, a month earlier than previous years. The Times Higher Education World University Rankings, along with the QS World University Rankings and the Academic Ranking of World Universities are described to be the three most influential international university rankings; the Globe and Mail in 2010 described the Times Higher Education World University Rankings to be "arguably the most influential."In 2014 Times Higher Education announced a series of important changes to its flagship THE World University Rankings and its suite of global university performance analyses, following a strategic review by THE parent company TES Global.
The inaugural 2010-2011 methodology contained 13 separate indicators grouped under five categories: Teaching, citations, international mix, industry income. The number of indicators is up from the Times-QS rankings published between 2004 and 2009, which used six indicators. A draft of the inaugural methodology was released on 3 June 2010; the draft stated that 13 indicators would first be used and that this could rise to 16 in future rankings, laid out the categories of indicators as "research indicators", "institutional indicators", "economic activity/innovation", "international diversity". The names of the categories and the weighting of each was modified in the final methodology, released on 16 September 2010; the final methodology included the weighting signed to each of the 13 indicators, shown below: The Times Higher Education billed the methodology as "robust and sophisticated," stating that the final methodology was selected after considering 10 months of "detailed consultation with leading experts in global higher education," 250 pages of feedback from "50 senior figures across every continent" and 300 postings on its website.
The overall ranking score was calculated by making Z-scores all datasets to standardize different data types on a common scale to better make comparisons among data. The reputational component of the rankings came from an Academic Reputation Survey conducted by Thomson Reuters in spring 2010; the survey gathered 13,388 responses among scholars "statistically representative of global higher education's geographical and subject mix." The magazine's category for "industry income – innovation" came from a sole indicator, institution's research income from industry scaled against the number of academic staff." The magazine stated that it used this data as "proxy for high-quality knowledge transfer" and planned to add more indicators for the category in future years. Data for citation impact, comprising 32
Judo was created in 1882 by Jigoro Kano as a physical and moral pedagogy in Japan. It is categorized as a modern martial art, which evolved into a combat and Olympic sport, its most prominent feature is its competitive element, where the objective is to either throw or takedown an opponent to the ground, immobilize or otherwise subdue an opponent with a pin, or force an opponent to submit with a joint lock or a choke. Strikes and thrusts by hands and feet as well as weapons defenses are a part of judo, but only in pre-arranged forms and are not allowed in judo competition or free practice. A judo practitioner is called a judoka; the philosophy and subsequent pedagogy developed for judo became the model for other modern Japanese martial arts that developed from koryū. The early history of judo is inseparable from its founder, Japanese polymath and educator Kanō Jigorō, born Shinnosuke Jigorō. Kano was born into a affluent family, his father, was the second son of the head priest of the Shinto Hiyoshi shrine in Shiga Prefecture.
He married Sadako Kano, daughter of the owner of Kiku-Masamune sake brewing company and was adopted by the family, changing his name to Kano. He became an official in the Shogunal government. Jigoro Kano had an academic upbringing and, from the age of seven, he studied English, shodō and the Four Confucian Texts under a number of tutors; when he was fourteen, Kano began boarding at Ikuei-Gijuku in Shiba, Tokyo. The culture of bullying endemic at this school was the catalyst that caused Kano to seek out a Jūjutsu dōjō at which to train. Early attempts to find a jujutsu teacher, willing to take him on met with little success. With the fall of the Tokugawa shogunate in the Meiji Restoration of 1868, jujutsu had become unfashionable in an westernized Japan. Many of those who had once taught the art had been forced out of teaching or become so disillusioned with it that they had given up. Nakai Umenari, an acquaintance of Kanō's father and a former soldier, agreed to show him kata, but not to teach him.
The caretaker of Jirosaku's second house, Katagiri Ryuji knew jujutsu, but would not teach it as he believed it was no longer of practical use. Another frequent visitor, Imai Genshiro of Kyūshin-ryū school of jujutsu refused. Several years passed before he found a willing teacher. In 1877, as a student at the Tokyo-Kaisei school, Kano learned that many jujutsu teachers had been forced to pursue alternative careers opening Seikotsu-in. After inquiring at a number of these, Kano was referred to Fukuda Hachinosuke, a teacher of the Tenjin Shin'yō-ryū of jujutsu, who had a small nine mat dojo where he taught five students. Fukuda is said to have emphasized technique over formal exercise, sowing the seeds of Kano's emphasis on randori in judo. On Fukuda's death in 1880, who had become his keenest and most able student in both randori and kata, was given the densho of the Fukuda dojo. Kano chose to continue his studies at that of Iso Masatomo. Iso placed more emphasis on the practice of "kata", entrusted randori instruction to assistants to Kano.
Iso died in June 1881 and Kano went on to study at the dojo of Iikubo Tsunetoshi of Kitō-ryū. Like Fukuda, Iikubo placed much emphasis on randori, with Kitō-ryū having a greater focus on nage-waza. In February 1882, Kano founded a school and dojo at the Eisho-ji, a Buddhist temple in what was the Shitaya ward of Tokyo. Iikubo, Kano's Kitō-ryū instructor, attended the dojo three days a week to help teach and, although two years would pass before the temple would be called by the name Kōdōkan, Kano had not yet received his Menkyo in Kitō-ryū, this is now regarded as the Kodokan founding; the Eisho-ji dojo was shoin. It was a small affair, consisting of a 12 jo training area. Kano took in resident and non-resident students, the first two being Tomita Tsunejirō and Shiro Saigo. In August, the following year, the pair were granted shodan grades, the first, awarded in any martial art. Central to Kano's vision for judo were the principles of seiryoku zen ` jita kyōei, he illustrated the application of seiryoku zen'yō with the concept of jū yoku gō o seisu: In short, resisting a more powerful opponent will result in your defeat, whilst adjusting to and evading your opponent's attack will cause him to lose his balance, his power will be reduced, you will defeat him.
This can apply whatever the relative values of power, thus making it possible for weaker opponents to beat stronger ones. This is the theory of ju yoku go o seisu. Kano realised that seiryoku zen'yō conceived as a jujutsu concept, had a wider philosophical application. Coupled with the Confucianist-influenced jita kyōei, the wider application shaped the development of judo from a bujutsu to a budō. Kano rejected techniques that did not conform to these principles and emphasised the importan
Volleyball is a popular team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules, it has been a part of the official program of the Summer Olympic Games since Tokyo 1964. The complete rules are extensive, but play proceeds as follows: a player on one of the teams begins a'rally' by serving the ball, from behind the back boundary line of the court, over the net, into the receiving team's court; the receiving team must not let the ball be grounded within their court. The team may touch the ball up to 3 times, but individual players may not touch the ball twice consecutively; the first two touches are used to set up for an attack, an attempt to direct the ball back over the net in such a way that the serving team is unable to prevent it from being grounded in their court. The rally continues, with each team allowed as many as three consecutive touches, until either: a team makes a kill, grounding the ball on the opponent's court and winning the rally.
The team that wins the rally serves the ball to start the next rally. A few of the most common faults include: causing the ball to touch the ground or floor outside the opponents' court or without first passing over the net; the ball is played with the hands or arms, but players can strike or push the ball with any part of the body. A number of consistent techniques have evolved in volleyball, including spiking and blocking as well as passing and specialized player positions and offensive and defensive structures. In the winter of 1895, in Holyoke, William G. Morgan, a YMCA physical education director, created a new game called Mintonette, a name derived from the game of badminton, as a pastime to be played indoors and by any number of players; the game took some of its characteristics from other sports such as handball. Another indoor sport, was catching on in the area, having been invented just ten miles away in the city of Springfield, only four years before. Mintonette was designed to be an indoor sport, less rough than basketball, for older members of the YMCA, while still requiring a bit of athletic effort.
The first rules, written down by William G Morgan, called for a net 6 ft 6 in high, a 25 ft × 50 ft court, any number of players. A match was composed of nine innings with three serves for each team in each inning, no limit to the number of ball contacts for each team before sending the ball to the opponents' court. In case of a serving error, a second try was allowed. Hitting the ball into the net was considered a foul —except in the case of the first-try serve. After an observer, Alfred Halstead, noticed the volleying nature of the game at its first exhibition match in 1896, played at the International YMCA Training School, the game became known as volleyball. Volleyball rules were modified by the International YMCA Training School and the game spread around the country to various YMCAs; the first official ball used in volleyball is disputed. The rules evolved over time: in 1916, in the Philippines, the skill and power of the set and spike had been introduced, four years a "three hits" rule and a rule against hitting from the back row were established.
In 1917, the game was changed from requiring 21 points to win to a smaller 15 points to win. In 1919, about 16,000 volleyballs were distributed by the American Expeditionary Forces to their troops and allies, which sparked the growth of volleyball in new countries; the first country outside the United States to adopt volleyball was Canada in 1900. An international federation, the Fédération Internationale de Volleyball, was founded in 1947, the first World Championships were held in 1949 for men and 1952 for women; the sport is now popular in Brazil, in Europe, in Russia, in other countries including China and the rest of Asia, as well as in the United States. Beach volleyball, a variation of the game played on sand and with only two players per team, became a FIVB-endorsed variation in 1987 and was added to the Olympic program at the 1996 Summer Olympics. Volleyball is a sport at the Paralympics managed by the World Organization Volleyball for Disabled. Nudists were early adopters of the game with regular organized play in clubs as early as the late 1920s.
By the 1960s, a volleyball court had become standard in all nudist/naturist clubs. Volleyball has been part of the Summer Olympics program for both men and women since 1964. A volleyball court is 9 m × 18 m, divided into equal square halves by a net with a width of one meter; the top of the net is 2.43 m above the center of the court for men's competition, 2.24 m for women's competition, varied for veterans a