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Spinning
Spin or spinning most often refers to: * Spinning (textiles), the creation of yarn or thread by twisting fibers together, traditionally by hand spinning * Spin, the rotation of an object around a central axis * Spin (propaganda), an intentionally biased portrayal of something Spin, spinning or spinnin may also refer to: Physics and mathematics * Spin, the rotation of an object around a central axis * Spin (physics) or particle spin, a fundamental property of elementary particles * Spin group, a particular double cover of the special orthogonal group SO(''n'') * Spin tensor, a tensor quantity for describing spinning motion in special relativity and general relativity * Spin (aerodynamics), autorotation of an aerodynamically stalled aeroplane * SPIN bibliographic database, an indexing and abstracting service focusing on physics research Textile arts * Spinning (polymers), a process for creating polymer fibres * Spinning (textiles), the creation of yarn or thread by twisting fibe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinning (cycling)
Spinning is a brand of indoor bicycles and indoor cycling instruction classes distributed and licensed by the American health and fitness company Mad Dogg Athletics. Launched in 1993, the brand has become a popular term to refer to indoor bicycles and indoor cycling fitness classes in the United States and throughout the world. History The Spinning indoor cycling program was developed by South African endurance bicycle racer Johnny Goldberg (known as Johnny G) in the mid-1980s after he was struck by a car while training for a race at night. Goldberg's early Spinning prototypes were targeted toward endurance athletes as a substitute for outdoor bicycle training, and allowed the athlete to train year-round regardless of outdoor weather conditions. In 1989 Goldberg opened the Johnny G Spinning Center, in Santa Monica, California, with bikes he built. In 1992 he moved the class to Karen Voight Fitness, in Hollywood, for more exposure. In 1993 Goldberg and his business partner, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pen Spinning
Pen spinning is a form of object manipulation that involves the deft manipulation of a writing instrument with hands. Although it is often considered a form of self-entertainment (usually in a school or office setting), multinational competitions and meetings are sometimes held. It is sometimes classified as a form of contact juggling; however, some tricks, e.g. "spreads" and "aerial tricks" do leave contact with the body. In addition to writing instruments, it is often also seen performed by drummers with their drumsticks. In fact, drumsticks are substantially easier to manipulate than pens, because of their extra mass and length. Pen spinning has quickly gained international popularity through online video sharing and forums. The hobby has been popular around the world since at least the 1970s. History The earliest record of pen spinning comes from a student in pre-WWII Japan. Others in Japan spun pens at least as early as the 1970s; however, the tricks performed were only basi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hand Spinning
Spinning is an ancient textile arts, textile art in which fibre crop, plant, animal fibre, animal or synthetic fibre, synthetic fibres are drawn out and twisted together to form yarn. For thousands of years, fibre was spun by hand using simple tools, the Spindle (textiles), spindle and distaff. It was only with the invention of the spinning wheel in the Islamic world circa 1030, and its subsequent introduction to China, India and Europe in the High Middle Ages, that the output of individual spinners dramatically increased. Mass production later arose in the 18th century with the beginnings of the Industrial Revolution. Hand-spinning remains a popular handicraft. Characteristics of spun yarn vary according to the material used, fibre length and alignment, quantity of fibre used, and degree of twist. History The origins of spinning fibre to make string or yarn are lost in time, but archaeology, archaeological evidence in the form of representation of string skirts has been date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hand Spinning
Spinning is an ancient textile arts, textile art in which fibre crop, plant, animal fibre, animal or synthetic fibre, synthetic fibres are drawn out and twisted together to form yarn. For thousands of years, fibre was spun by hand using simple tools, the Spindle (textiles), spindle and distaff. It was only with the invention of the spinning wheel in the Islamic world circa 1030, and its subsequent introduction to China, India and Europe in the High Middle Ages, that the output of individual spinners dramatically increased. Mass production later arose in the 18th century with the beginnings of the Industrial Revolution. Hand-spinning remains a popular handicraft. Characteristics of spun yarn vary according to the material used, fibre length and alignment, quantity of fibre used, and degree of twist. History The origins of spinning fibre to make string or yarn are lost in time, but archaeology, archaeological evidence in the form of representation of string skirts has been date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinning (textiles)
Spinning is a twisting technique to form yarn from fibers. The fiber intended is drawn out, twisted, and wound onto a bobbin. A few popular fibers that are spun into yarn other than cotton, which is the most popular, are viscose (the most common form of rayon), and synthetic polyester. Originally done by hand using a spindle whorl, starting in the 500s AD the spinning wheel became the predominant spinning tool across Asia and Europe. The spinning jenny and spinning mule, invented in the late 1700s, made mechanical spinning far more efficient than spinning by hand, and especially made cotton manufacturing one of the most important industries of the Industrial Revolution. Process The yarn issuing from the drafting rollers passes through a thread-guide, round a Ring spinning#How it works, traveller that is free to rotate around a ring, and then onto a tube or bobbin, which is carried on to a Spindle (textiles), spindle, the axis of which passes through a center of the ring. The spin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinning (motorsport)
Spinning is a South African motorsport that involves driving cars at speed in circles and performing stunts in and out of the car. It originated in Soweto in the late 1980s, and was performed as a funeral ritual in which a stolen car was spun around to honor the deceased. It is now a recognized motorsport. History The motorsport originated in Soweto in the setting of black oppression and gangster culture. In the late 1980s, spinning increased in popularity. It was initially performed as a funeral ritual. A car would be stolen and spun around to honor the deceased. In the early 1990s, spinning became practiced outside of the criminal world. Drivers drag-raced and performed stunts with their cars. Spinning has since evolved to become more formalized as a legitimate sport, complete with promoters, performers, and spectators. Motorsport South Africa now regulates and licenses spinning events. In 2012, Motorsport South Africa recognized an event in Soweto in which the spinners recei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinning (polymers)
Spinning is a manufacturing process for creating polymer fibers. It is a specialized form of extrusion that uses a spinneret to form multiple continuous filaments.. Melt Spinning If the polymer is a thermoplastic then it can undergo melt spinning. The molten polymer is extruded through a spinneret composed of capillaries where the resulting filament is solidified by cooling. Nylon, olefin, polyester, saran, and sulfar are produced via this process. Extrusion spinning Pellets or granules of the solid polymer are fed into an extruder. The pellets are compressed, heated and melted by an extrusion screw, then fed to a spinning pump and into the spinneret. Direct spinning The direct spinning process avoids the stage of solid polymer pellets. The polymer melt is produced from the raw materials, and then from the polymer finisher directly pumped to the spinning mill. Direct spinning is mainly applied during production of polyester fibers and filaments and is dedicated to high produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indoor Cycling
Indoor cycling, often called spinning, is a form of exercise with classes focusing on endurance, strength, intervals, high intensity (race days) and recovery, and involves using a special stationary exercise bicycle with a weighted flywheel in a classroom setting. When people took cycling indoors in the late 19th century, whether for reasons of weather or convenience, technology created faster, more compact and efficient machines over time. The first iterations of the stationary bike ranged from strange contraptions like the Gymnasticon to regular bicycles placed atop rollers. Class content and goals Classes generally use specialized stationary bicycles. Features include a mechanical device to modify the difficulty of pedaling, specially shaped handlebars, and multiple adjustment points to fit the bicycle to a range of riders. Many have a weighted flywheel, which simulates the effects of inertia and momentum when riding a real bicycle. The pedals are equipped with toe clips as o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Spinning
Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. Spinning can be performed by hand or by a CNC lathe. The metal spinning trade is one that dates back to antiquity and was a skill used in the Ancient Egyptian era. This is when metal spinning was limited to soft metals spun by human power on primitive lathes. The technique gave significant advances to hydro and steam power in Europe and North America in the 19th century and by the early 20th century the electric motor provided the necessary power and high-speed turning capability. With this advancement, metal spinning craftsmen were now able to spin higher quality pieces made out of brass, copper, aluminum and even stainless and cold-rolled steel. Metal spinning does not involve removal of material, as in conventional wood or metal turning, but forming (moulding) of shee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poi Spinning
Poi is a performing art and also the name of the equipment used for its performance. As a skill toy, poi is an object or theatrical prop used for dexterity play or an object manipulation. As a performance art, poi involves swinging tethered weights through a variety of rhythmical and geometric patterns. Poi artists may also sing or dance while swinging their poi. Poi can be made from various materials with different handles, weights, and effects (such as fire). Poi originated with the Māori people of New Zealand, where it is still practised today. Poi has also gained a following in many other countries. The expansion of poi culture has led to a significant evolution of the styles practised, the tools used, and the definition of the word "poi." Māori culture In the Māori language, ''poi'' can mean the physical objects used by the dancers, the choreography itself, or the accompanying music. In Māori culture, poi performance is usually practised by women. Some legends ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spin (propaganda)
In public relations and politics, spin is a form of propaganda, achieved through knowingly providing a biased interpretation of an event or campaigning to influence public opinion about some organization or public figure. While traditional public relations and advertising may manage their presentation of facts, "spin" often implies the use of disingenuous, deceptive, and manipulative tactics. Because of the frequent association between spin and press conferences (especially government press conferences), the room in which these conferences take place is sometimes described as a " spin room". Public relations advisors, pollsters and media consultants who develop deceptive or misleading messages may be referred to as "spin doctors" or "spinmeisters". A standard tactic used in "spinning" is to reframe or modify the perception of an issue or event to reduce any negative impact it might have on public opinion. For example, a company whose top-selling product is found to have a sign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spin (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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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