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Table Tennis Racket
A table tennis racket (also known as a "paddle" or "bat") is used by table tennis players. It is usually made from laminated wood covered with rubber on one or two sides depending on the player's grip. Unlike a conventional " racket", it does not include strings strung across an open frame. Though the official ITTF term is "racket", the US generally uses the term "paddle", while Europe and Asia use the term "bat". Rubber variations Table tennis regulations approved by the International Table Tennis Federation (ITTF) allow different surfaces on each side of the paddle for varying amount of spin (including nullifying it) or speed. For example, a player may have a spin-heavy rubber on one side of his paddle, and no spin on the other side. The player can flip the racket during play for different types of returns. To help a player distinguish between different types of rubber used by his opponent, regulations specify that one side of a paddle must be red, blue, violet, pink, or green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabletennis
Table tennis, also known as ping-pong and whiff-whaff, is a sport in which two or four players hit a lightweight ball, also known as the ping-pong ball, back and forth across a table using small solid rackets. It takes place on a hard table divided by a net. Except for the initial serve, the rules are generally as follows: Players must allow a ball played toward them to bounce once on their side of the table and must return it so that it bounces on the opposite side. A point is scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. Spinning the ball alters its trajectory and limits an opponent's options, giving the hitter a great advantage. Table tennis is governed by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926. ITTF currently includes 226 member associations. The official rules are specified in the ITTF handbook. Table tennis has been an Olympic sport since 1988, with several event c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Table Tennis
Table tennis, also known as ping-pong and whiff-whaff, is a sport in which two or four players hit a lightweight ball, also known as the ping-pong ball, back and forth across a table using small solid rackets. It takes place on a hard table divided by a net. Except for the initial serve, the rules are generally as follows: Players must allow a ball played toward them to bounce once on their side of the table and must return it so that it bounces on the opposite side. A point is scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. Spinning the ball alters its trajectory and limits an opponent's options, giving the hitter a great advantage. Table tennis is governed by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926. ITTF currently includes 226 member associations. The official rules are specified in the ITTF handbook. Table tennis has been an Olympic sport since 1988, with several event ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Table Tennis Rubber
Table tennis rubber is a type of rubber used as covering on a racket in table tennis. Modern table tennis rubber is usually composed of two layers: a layer of foam underneath and a layer of actual rubber on the surface. There are four common types of table tennis rubbers: short pips, long pips, antispin, and inverted. The thickness and density of the sponge layer underneath also affects how the rubber will handle the ball. Because of the large variety of table tennis rubbers, there are a larger variety of playing styles in table tennis than in other racket sports. History Rubber was first used in table tennis with the rise of hard racket paddles in the 1930s; the rubber consisted of short pimples over a wooden blade. In the 1950s, the sponge racket was introduced. It had a layer of foam underneath the layer of rubber. The foam helps provide more spin and speed. The International Table Tennis Federation (ITTF) regulated the thickness of the foam + rubber layer to a maximum of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racket (sports Equipment)
A racket, or racquet, is a sports implement used for striking a ball or shuttlecock in games such as squash, tennis, racquetball, badminton and padel. In the strictest sense a racket consists of a handled frame with an open hoop across which a network of strings is stretched tightly. Some rackets may have a solid or perforated hitting surface instead of a network of strings. Such rackets may be called a paddle or bat. Collectively, these games are known as racket sports. Racket design, materials and manufacturing has changed considerably over the centuries. The frame of rackets for all sports was traditionally made of solid wood (later laminated wood) and the strings of animal intestine known as catgut. The traditional racket size was limited by the strength and weight of the wooden frame which had to be strong enough to hold the strings and stiff enough to hit the ball or shuttle. Manufacturers started adding non-wood laminates to wood rackets to improve stiffness. Non-wood rack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Table Tennis Federation
The International Table Tennis Federation (ITTF) is the governing body for all national table tennis Table tennis, also known as ping-pong and whiff-whaff, is a sport in which two or four players hit a lightweight ball, also known as the ping-pong ball, back and forth across a table using small solid rackets. It takes place on a hard table div ... associations. The role of the ITTF includes overseeing rules and regulations and seeking technological improvement for the sport of table tennis. The ITTF is responsible for the organization of numerous international competitions, including the World Table Tennis Championships that has continued since 1926. Founding history The ITTF was founded in 1926 by William Henry Lawes from Wymondham, the nine founding members being First Austrian Republic, Austria, Czechoslovakia, Denmark, England, Weimar Republic, Kingdom of Hungary (1920–1946), Kingdom of Hungary, British India, Sweden, and Wales. The first international tournament was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Glue
In table tennis, speed glue is a glue that is used to re-fix the rubber surfaces to the racket or paddle. Speed glue is usually applied around 30 minutes before a match starts. The use of speed glue has been found to increase the elasticity of the racket, which adds speed and spin to the ball. Speed glue works by its solvent vapours which make the porous cells of soft rubber expand. This stretches the rubber giving it a tension that in turn makes the ball behave like an object meeting a trampoline. It was discovered by accident in the 1970s when a player used bicycle puncture repair glue to fix his racket before a match. The difference in the play of the ball became immediately obvious. The high performance effect lasts only a few hours. Table tennis player Dragutin Šurbek of Yugoslavia is given the major credit for popularising this use of speed glue between 1979 and 1983. Speed glue was allowed for the last time in the 2008 Summer Olympics. From the 2012 Olympic games, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catapult
A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. A catapult uses the sudden release of stored potential energy to propel its payload. Most convert tension or torsion energy that was more slowly and manually built up within the device before release, via springs, bows, twisted rope, elastic, or any of numerous other materials and mechanisms. In use since ancient times, the catapult has proven to be one of the most persistently effective mechanisms in warfare. In modern times the term can apply to devices ranging from a simple hand-held implement (also called a "slingshot") to a mechanism for launching aircraft from a ship. The earliest catapults date to at least the 7th century BC, with King Uzziah, of Judah, recorded as equipping the walls of Jerusalem with machines that shot "great stones". Catapults are mentioned in Yajurveda un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volatile Organic Compounds
Volatile organic compounds (VOCs) are organic compounds that have a high vapour pressure at room temperature Colloquially, "room temperature" is a range of air temperatures that most people prefer for indoor settings. It feels comfortable to a person when they are wearing typical indoor clothing. Human comfort can extend beyond this range depending on .... High vapor pressure correlates with a low boiling point, which relates to the number of the sample's molecules in the surrounding air, a trait known as volatility (chemistry), volatility. VOCs are responsible for the odor of scents and perfumes as well as pollutants. VOCs play an important role in communication between animals and plants, e.g. attractants for pollinators, protection from predation, and even inter-plant interactions. Some VOCs are dangerous to human health or cause harm to the natural environment, environment. Human impact on the environment, Anthropogenic VOCs are regulated by law, especially indoors, where c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 Summer Olympics
The 2008 Summer Olympics (), officially the Games of the XXIX Olympiad () and also known as Beijing 2008 (), were an international multisport event held from 8 to 24 August 2008, in Beijing, China. A total of 10,942 athletes from 204 National Olympic Committees (NOCs) competed in 28 sports and 302 events, one event more than those scheduled for the 2004 Summer Olympics. This was the first time China had hosted the Olympic Games, and the third time the Summer Olympic Games had been held in East Asia, following the 1964 Olympics in Tokyo, Japan, and the 1988 Olympics in Seoul, South Korea. These were also the second Summer Olympic Games to be held in a communist state, the first being the 1980 Summer Olympics in the Soviet Union (with venues in Russia, Ukraine, Belarus, and Estonia). Beijing was awarded the 2008 Games over four competitors on 13 July 2001, having won a majority of votes from members of the International Olympic Committee (IOC) after two rounds o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patina
Patina ( or ) is a thin layer that variously forms on the surface of copper, brass, bronze and similar metals and metal alloys (tarnish produced by oxidation or other chemical processes) or certain stones and wooden furniture (sheen produced by age, wear, and polishing), or any similar acquired change of a surface through age and exposure. Additionally, the term is used to describe the aging of high-quality leather. The patinas on leather goods are unique to the type of leather, frequency of use, and exposure. Patinas can provide a protective covering to materials that would otherwise be damaged by corrosion or weathering. They may also be aesthetically appealing. Usage On metal, patina is a coating of various chemical compounds such as oxides, carbonates, sulfides, or sulfates formed on the surface during exposure to atmospheric elements (oxygen, rain, acid rain, carbon dioxide, sulfur-bearing compounds). In common parlance, weathering rust on steel is often mistakenly refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Table Tennis
Table tennis, also known as ping-pong and whiff-whaff, is a sport in which two or four players hit a lightweight ball, also known as the ping-pong ball, back and forth across a table using small solid rackets. It takes place on a hard table divided by a net. Except for the initial serve, the rules are generally as follows: Players must allow a ball played toward them to bounce once on their side of the table and must return it so that it bounces on the opposite side. A point is scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. Spinning the ball alters its trajectory and limits an opponent's options, giving the hitter a great advantage. Table tennis is governed by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926. ITTF currently includes 226 member associations. The official rules are specified in the ITTF handbook. Table tennis has been an Olympic sport since 1988, with several event ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
