① gyroscope "for short. Measuring the relative inertia of the space vehicle rotation or angular velocity of the device. Mainly by a high-speed rotation of the rotor support frame in the form of one or two. With fixed axis and precession of other features. ② shape slightly like conch, children's toys. with a rope wound, the hard Drawstring can be vertical rotation. Some of the elastic and starting rotation.
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tuó luó
Children's toys; general is pear-shaped cone, the bottom has a steel tip, you can turn with your fingers, you can also use string, a spring or to rotate with the whip
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No. 4
Children's toys. Somewhat similar to the shape of conch, usually made of wood, to make it spin in the ground upright. Some of them made of metal, and starting the elastic rotation. Liu Dong in Woodland is "slightly Scenery of Beijing Spring Field": "top person, such as small empty wooden clock, in fact without the handle, in order to whip the rope around the foot without bamboo. Zhuo in, the emergency switch the whip, a button, then turn gyro, silent also. as its slow and whip of, and turns to the free complex. transfer of the disease, as the Standing out on the floor, roof light spin rotation, shadow fixed also. "Lao She" Camel "one: "people's car in his lease, he from morning till night, from east to west, from south to north, as was smoking a transfer of the top people; he was not himself."
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No. 5
Dialect. Around; vicinities. Chen Dengke "living pond" a: "From the New River set top people within ten miles, changed day by day, like, big smaller families, small families have become light eggs."
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Gyro Introduction
China's first entertainment - Gyro Also as Rudra, Hokkien called "dry music", the English called "spinning top", Japanese with "independent music" and is called "koma". Ancient traditional gyro is roughly obconic wood or iron, there are a variety of modern materials and shapes appear.
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Gyro definition
◆ Mandarin Daily News Dictionary: children's toys, Jian Zhen lower end, around the string, anxious to throw to, rotate the ground. ◆ New Dictionary (Newbury Park): wooden children's toys, shaped like a bullet, with a rope from the tip of the foot (available bamboo, made of iron) around the upper, then throwing sharp Gravitropism foot, fast pull rope, gyro will erect rotation. ◆ Etymology (Yuan-Liou Publishing): Gyro who, wooden, such as small empty bell, solid without handles, rope whip around, Zhuo to the ground, emergency button which whip. A button, then turn the gyro, silent also. Depending on its slow and whip, around no-go. Transfer of the disease, as Zhuoli ground, spin spin top light, shadow does not move as well. ◆ "play the game" Note: anything, as long as the center of gravity of the place, plug in a stick, and then rotate the stick to drive the rotation of the whole, and that is the gyro. ◆ msn encarta dictionary: a toy that spins around on a rounded or pointed base, traditionally a conical wooden toy that is _set_ spinning by pulling a string wrapped around it also calledspinning top (translation: wound into a circle or reference point A rotatable toy wooden toy by conventional conical pull rope is wound around it is rotated. called spinning top.) ◆ Oxford Dictionary (Prentice Hall): toy that spins and balances on a point, _set_ in motion by hand, or by winding round it a string which is pulled away, and (in some case) kept in motion by being whipped (. is maintained at a point of balance and rotate toys can manually turn or pull rope wound around it to rotate (in some cases) may be used to rotate the whipped.) ◆ over various interpretations, based on comments made by the traditional gyro for example, if it is on top of today are more diverse too narrow. Gyro in many peoples around the world have similar rotation of toys, but after research and improvements of modern technology, has developed a variety of strange forms and gives a variety of functions; such as the production of materials no longer confined to the gyro wood, do not need to touch the ground magnetic gyro, gyro does not need to hand-twist rope, ring gyroscope may sound, the Beyblade made oblate body, etc., are beyond the scope of traditional gyro definition. Therefore, a broad interpretation should be considered gyro is defined as: any object as long as the fulcrum of its center of gravity, the force to maintain its stable rotation state can be called the top.
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Classification and play gyro
Many types of gyro, play also different, in accordance with the classification of the material, are described below: Paper gyro Due to the volume of paper gyro small, so long as the use of the thumb and index finger, the upper end of the shank clasped paper gyroscope, the rapid twirling on the table, the paper will foot the gyro spin independently. Gyro coins Coins and paper gyro gyro also play the same hand twist, you can rotate it. Spool Gyro Spools gyro play, but also the use of hand-twisted way you can rotate it. Bamboo gyro First through coarse cotton bamboo, then wrapped in bamboo handle volume, pay attention, should top down around. Well wrapped until after the end of a holding line to designate smoke, one armed with gyro and bamboo, pushed forward, two hands at the same time force the gyro will rush forward, but a buzzing sound. Wooden top Ultra-small gyro play, is wring their hands, there are two general ways a child spinning top. The first is the level of pumping method, which is stooping from the top side of the trunk thrown forward when the gyro from the hands in the hands of the rope around the tail, a quick backward pumping, the gyro will be along the ground level rotating forward. The second is a vertical pumping method is to hold high the gyro over the top, from the top down, while pumping while playing a trick, which is "killer" action, if not, you can not dispose of others' dead gyro " easy to lose, will be a play in order to participate in this competition to win. Usually there are two kids playing the game the way the gyro. The first is called the sub-side method is divided into two groups who will participate, and everyone pumping gyro, gyro that group's first look down to the ground. Will hit people on the ground rotating gyroscope will be relatively long. Who does not play, it is easy on the ground Luangun gyro, or turn too soon. Gyro down on the ground, it is called "death gyro", only to let the other chops butchered. Lose this side, in order to avoid his beloved gyro, slaughtered by the other nails can swap a small, hard top instead. At this time, win this side, with their tops, over their heads, at the target, down slam. The second method is a circle, draw a circle on the ground, the central circle, and then draw a small circle, everyone turns to his gyro circle play, so the gyro can be rotated out. If the gyro has been fixed at a point on a rotating, then used a rope to ring it out, once they reach the outside of the circle is still rotating, which are not "dead." If the gyro stops in the circle, or a draw down not move, are considered "dead", and to be placed among the small round circle, any others punished. If the punishment of others gyro also stopped in the circle, still have to put the small round circle, fancy punishment. If you are not lucky to hit, or hit and not be broken down to, you can come up with a gyroscope, horizontal pumping method, the small round circle until his death hit the top of the loop. Small, medium and large and small gyro gyro gameplay is not the same, you must first wrapped Hui. Right off the rope circle Tuo nails, with his left hand hold him down, and then right along the rope around the nail out, Tuo strapped to the body, then lift your hands gyro, inclined to throw to the ground empty inside, and quickly forced to withdraw rope so the gyro spin up on the ground. Plastic Gyro Play, after the spring twisted tight, press the center button, the next section will be out of conch, and rotation on the table or on the ground, but also very interesting and fun. Plastic is also made of plastic rubber gyro gyro like a small saucer general, but each having a vertical axis, using the blanket tension, the top holding the pistol-shaped emitter. Play, turn the top left hand so tightly twisted rubber band, then relax Ligament, the gyro is fixed on the transmitter, then the index finger lightly pressed the trigger, the gyro will rotate. Metal Gyro Is played, with a thread wound around the center axis of the gyro, and quickly make a rotary pump, and then placed on a frame, not only a rapid rotation of the intermediate axis, like the radar antenna as the gyroscope for three hundred and sixty degrees rotation, also called radar gyro.
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Gyro production
Paper gyro Paper size gyro informal, free production. Production methods that draw on paper with a compass in the table three circles, then cut out the circle with scissors. After the cut is good, in a circle painted on their favorite designs, then colored in the pattern. Then three circles overlap with glue, sticky good, and then flatten. Then use an awl in the center of the place, drill a small hole, and then pointed a toothpick or sharpened bamboo chopsticks, through the center, tip down, is complete. Gyro coins Coins gyro, materials coins, small sticks and paper. Its production method is to first use a toothpick or small stick, stick some glue, tightly rolled piece of paper children, but be aware that this thickness must be money holes or holes the size of the iron and just close it. Spool Gyro Spools gyroscope making materials spools, small sticks, paper, saw. First, the end of the spool sawing, sawing was careful to smooth the job, and then with the color pattern. Then a section of bamboo chopsticks, which sharpened end of a round cut, strip child, the same, the thickness of the paper and spools must be as large as the central hole on the volume, it will not loosening. After a good roll, will stick _insert_ed into the spool hole plugged attention to, but also to maintain the vertical axis. Bamboo gyro Bamboo gyro is made of bamboo because it is hollow, there are holes on the bamboo, turn time, will a buzzing sound, it was also called to the bell, or "bamboo conch." Because of its ordinary gyro and shape is different, there is a shank, it is also called "Shank conch." Its production method is, first saw a period of about 5 cm in diameter, 6.5 cm long bamboo, bamboo dig on a 0.5 cm wide, 3 cm long small long hole, as the sound purposes. Then cut a bamboo stick to make the shaft, and then made two round plates with a thin wood, the diameter of the circular plate, presumably with the circumference of the inner wall of bamboo is about the same, and then dig two central circular plate with glue bamboo stick tight inner wall of the upper and lower, then the central planks interspersed with bamboo shaft, pay attention to the lower end of a short and sharp bamboo shaft, while the upper longer. Another cut a piece of bamboo, and drilling, with a long bamboo cotton rope through the holes, wrapped around a bamboo stick can play. Wooden top Also the Chinese traditional wooden gyro gyro. Wood Gyro is a bell-shaped, and can rotate the toys on the floor, use a hard wood, such as tree trunks guava, longan made. Past the kids are playing small gyro, the children themselves are cut from the system, you can get a sense of accomplishment, and a self-creative joy of success. Now thanks to advances in industry, there are many large or extra large wooden tops, lathe machines are manufactured without a certain size, usually weight to determine the size of the gyroscope. Depending on the type of wood gyro volume size, the wood can be broadly divided into the following top seven categories: * Ultra compact gyro: about 1 centimeter in diameter, smaller than the volume of the fingers. * Small Gyro: diameter of about 4-5 cm, usually children aged below the play is this. * Small and Medium Gyro: weighing 10 kg or less, the fifth or sixth grade students playable this gyro. * Medium gyroscope: Within weighing about 15-30 kg, children over the age of 13 playable this gyro. * Large Gyro: more than 45 cm in diameter, weighing 31 kg or more, for adults to play a large gyroscope. * Oversize top: about 50 kg in weight. * Gyro King: weight up to 70 kg. Dasi, Taoyuan gyro king, has the highest record 187.5 kg. Small wooden Tuo classification, continue to introduce small wooden Tuo classification. Due to differences in functionality into the following three categories: * Needle nail gyro: tip of the nail-shaped or ball-shaped, suitable for rotation. * Sword nail Gyro: tip to tip shape, not only suitable for rotation, and both split strike capabilities. * Axe nail Gyro: ax shaped like the tip can be decomposed into two gyro others hit hard when split, so there are "killer" gyro said. Plastic Gyro Plastic spring gyro, gyro is a plastic factory which manufactured the entire top and down into two, the festival is a button and the spring means there is a hole under section conch. Metal Gyro Metal gyro, which is a modern product, but also science toys.
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Origin and development of the gyro
Gyro origin because of the age did not examine detailed records are available, but in the Neolithic ruins unearthed over the top, such as Changzhou, Jiangsu unearthed Neolithic culture Majiayao wood gyro and Shanxi Longshan culture pottery unearthed in the ruins gyroscope; currently History records it mostly occurs when a similar Song gyro toys for the beginning, called "thousands" (or thousands of vehicles); That is a central shaft (iron) is about an inch disk shape (diameter about four inches) of objects, hand twist in the disk rotates, who turn the game for a long time, then this is one game Language backyard palace concubines ladies to pass the lonely moments. Taiwan's National Palace Museum collection in Song Su Hanchen (Kaifeng, where he had Huizong Vision and Art Gallery had been entertaining to Zong-old teacher, working on the character of the painting, Buddhism, Taoism, especially the more original paintings of children at play skill) "Children at Play map "in front of the screen has two children, is the name of the gyro play, also confirmed that there was the appearance of the body gyro inverted bell, the picture study, when the gyro should be made of wood, like a cone, with a rope Well wrapped, pulled to the front of the ground after throwing the gyro will spin up on the ground. When it slow down, and then continued to beat its side rope, so you can turn off the hook. Until now, the mainland north of children in the winter and early spring are also popular this play, especially in the end have to throw thick ice hit, but do not have fun. Also a Su Hanchen works "Autumn Chamber Opera infants", there is a push date mill props, using two dates, plus one half of the cross-section of the bracket made from jujube dates grinding toy, it is a rotation, balancing game, the game, who can make jujube mill to maintain balance, transfer for a long time, whoever wins; This painting also demonstrate the diversity of existing gyro toys patterns appear. Ming "Royal Plaza features a little," recorded by the gyro, such as small empty wooden bell, solid without handles, rope whip around without bamboo ruler, Zhuo on the ground, emergency button which whip. A button, then turn the gyro, silent also. Depending on its slow and whip, around no-go. Transfer of the disease, as Zhuoli ground, spin spin top light, shadow does not move as well. Its small empty bell shape, solid sessile, whip the rope around to describe the late Ming Dynasty certificates of gyro gyro has been whipped with today is no different; Liu Dong's poem "Willow live" Compilation: Willow children live, whip Tuo Lo, the word "gyro" This period has been officially appear.
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Gyro role in life
◆ Leisure ◆ intellectual development: Germany and other countries gyro designed educational supplies, cards placed on the gyro, gyro through the turn of the game, identify patterns, colors or numbers on the cards to train the eye and attention. ◆ folk sports ◆ art: the use of different colored pigments and methods, showing different native people, the beauty of the rotation mix, can be a collection of treasures. ◆ Scientific Research
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Principle gyroscope
When the effect of a mechanical system (object) by the number of forces, if their force (magnitude and direction) is zero, and each force to any point of the moment and is also zero, and called this mechanical system is in equilibrium. In other words, when the object presents a "mover constant dynamic and static by constant static" state, you can call it "balance." Objects can be presented in many cases the equilibrium state, not just in the rest of the time, when it will reach equilibrium when moving (including the stars of the running as well), and some state of equilibrium can be sustained, and some just temporary. In general, the static equilibrium mostly stable equilibrium, dynamic equilibrium is mostly unstable equilibrium; gyroscopic force when rotated in all directions due to the centrifugal force balance sum, so the gyro can temporarily standing with the shaft, maintaining equilibrium phenomena, followed by the air resistance, friction influence of various factors on the ground, or gyro gravity problems, to rotate the force gradually weakened, disappear when the power until the rotating gyro followed swaying poured down. So, how to make a good _select_ion of tops, throwing just the right tips to master the force and allow the gyro throw more accurate, turn longer and play gyro Challenge has become the ultimate goal.
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Playing top tips
◆ throwing gyro skills (two point five inches in diameter to the top three most known gyro silver hand) ① wrapped around the rope: nail up, right-handed winding clockwise (left-handed in the opposite direction), reserved for a small, make a single knot to hold the rope for (or wrapped around the finger head). ② Chi Fa: nailed down the top or left or right, with the thumb, index finger, middle finger down to take a virtual grip on top. ③ parabolic law: the distance from the rope length plus the length of the arm length to choose, toward the goal of the swing arm, gyro middle finger points in the direction away from the goal at hand, the strength is dependent on the accumulated experience of constant practice. Hit the big top tricks (s) ① wrapped around the rope: Nail-up display, according to the gyro wrapped two to three times the length of the tip, and then pointed to the gyro gyro rope wrapped around the body from top to bottom, in turn taut, about one-third more than the best. ② the gyro: mining in one hand rope fastened top circumference of gyro, gyro tip at the other hand, picked up by the legs gyro, gyro forward sharp downward preparation. Throwing the gyro on the occasion, at the tip of the hand holding the gyro to leave immediately, and the other hand holding the rope fastened gyro spinning top circumference of homeopathy, produce rotary power, then pull the rope with both hands to interact, so that the gyro will not fall to the ground. Run in the opposite direction to close the rope, do not look back, and so hove finished Serve.
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Save gyro
Gyro should be stored in a cool, well-ventilated place, avoid the sun cracks and damp moldy, if necessary, appropriate use of air-conditioners or dehumidifiers dehumidifier to storage areas; ironwork oil will have to be given timely maintenance (not too much, so easily wrapped around the rope) ; when the rope feels hard, it should be soaked in water to scrub, thrown playing some (to remove sand dust) after dry. Gyro is a toy familiar schoolchildren. A tiny gyroscope on the table fast to spinning. See it standing single point on the desktop side of the tilt axis around rapid rotation, rotation axis and the other side of the bus like a cone around like a sentinel over the axis and perpendicular to the desktop, do a slow but steady revolution movement. Why not rotate when the gyro down? In ten million people playing gyroscope can correctly answer that question, probably not much. Indeed, rotating gyroscope is very interesting and mysterious. Gyro in science has high research value. The spinning gyroscope into the air. Its own axis can maintain the original orientation. This feature gyroscope is used to make directional gyroscope, is widely used in marine, aviation and space flight being.
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Gyro gameplay and rules
Play gyroscope (a) Gyro play and play quite diverse, but more common playing rules in two ways: First, the level of law: Stoops flip your wrist from behind, throwing the gyro Later pull forward, the gyro will rotate forward horizontally along the ground. Second, the vertical method: the gyro force deepened thrown from scratch on top, gyroscope will fall from the sky revolves, this play is usually used to "nail Ganle" time. As a result of the different regional gyro game will have different gameplay, is summarized as follows: First, the top sumo l, prepare a cardboard box (with openings), installed the best cake box. 2, the tray on the ground, away from the tray 3 to 5 meters draw a line, as a starting point. 3, the two play this game again, mora decide the order, after the two were retreated line, has the gyro into the tray, since the two are high-speed rotating gyroscope in the tray, so there will be a collision knocked the box, the top is popped by to lose, and if one of them did not break into the top box, can be considered lost. Second, the Liberal whip 1, each of the freedom to choose the place on the ground, his gyro spin. 2, the top fastest man stopped to lose, gyroscope must be nailed to the ground, so that other people attacked by the gyro rotation longest that a start will be aligned on the floor of his gyro gyro crushed, this time If the top of the material is poor, it will crack from one to two, if the gyro from crack Open, nails fell off, it nails it belongs to all the people who destroyed it, then you can re-playing the new bureau. 3, if after all of the nail fight, gyro is still intact, the next time you play with the input, this person will not have to come up with gyro being attacked (once immunity). Third, smelly head chickens 1, draw a circle on the ground, about 30 centimeters in diameter. 2, people need to participate in the game to come up with a gyroscope in each circle, the mora decide priorities. 3, the first circle of the first to pick up the whip gyro, gyro rotation techniques and the use of force, the other inside the top circle shot out of the loop, if the "rescue" of a gyro, you can continue to beat, but if gyro beat yourself accidentally left in the circle, then the loss of competition. 4, due to the gyro is fitted with nails and high-speed rotation, was rescued gyro often have black and blue, like a flock often bullied by peers, chickens pecking at the head, so this game is called "smelly head chickens." Fourth, nail Ganle 1, draw a circle on the ground, about 30 centimeters in diameter, the center and then draw a small triangle. 2, participants decided mora sequence, in turn laid the gyro to the circle, the circle must fall gyro place, otherwise even failure. 3, not only into the top of the circle, but also using the rotation power of the outer circle of the transfer to be successful, if the circle is fixed to the gyro rotation Wang, no signs of movement, is not stopped before the gyroscope can also It is triggered by a rope out of the loop, when it reaches the outside of the circle is spinning gyroscope to be successful. 4, if the gyro parked in the circle will not even go on a whip rotation, are considered failures, this time too the nail on the top center of the small circle of a triangle, and let others attack. 5, if his gyroscope was kept in a triangle, you can also pick up their second teeth gyro with playing "smelly head chickens" approach, his gyro rescued. Fifth, fixed gyro 1, put a disc on the floor or table (preferably iron). 2, a meter away from the disc to draw a line, as playing top starting point. 3, everyone from the top to the starting point in throwing the disc, the disc can rotate thrown by the gyro, even if successful, would eliminate the losers, so the second and third round of re-match, starting 30 are _set_ back centimeters (one foot). 4, the last person farthest away from the disc, but also in the gyro into the disc by the winners. Sixth, the mountains 1, placed on the ground ten plates (iron), arranged in a row. 2, the top hit on the first plate, to be at the top of this disc rotates, picked up the plate and put the gyro into the second disk. 3, This is the way into the third, fourth. . . Until the tenth plate so far. 4, measuring the time it takes, the less time spent by winning, if the gyro stops halfway, then disqualified. Of course, these games are played far more than playing top, many of the rules can be customized, as long as people are willing to participate in the game you can abide. Samsung Township, Yilan County, 宁明国 small 虞进鸿 teacher in-depth study, and _set_ out a number of top gameplay and rules over the fourth grade students in the school staff an innovative play as many gyro: Bowling play, throwing behind fight, bomb hit their feet, body lateral play, play, etc. double rope with both hands. These students are more creative play to take a lot of names, such as "kicking the universe", "over the cave," "the golden eggs", "surprise", "relentless", "Buddha's Palm" to enhance the cultural gyroscope . Gyro play (two) First, draw circles Draw a circle on the ground, the diameter step between steps, and then draw a circle in the middle of a triangle, everyone to his own circle in the fight gyro, gyro and let himself out of the ring inward rotation. Sometimes gyro will be fixed in the circle without rotational movement, the available rope trapping him tick outsiders, once they reach the outside of the circle still turn even alive. If you stop, we must be placed within the triangle, as the fancy struck penalty. Second, the sub-side Turn one side, the top draw on the floor until someone fails. Failed gyroscope on fancy combat on the ground, wait until the other party when the gyro stops, we can change the other attack. Third, persistent game The same type of gyro, at the same time lay, turning to see who is the longest time is the winner. Fourth, throw away the game Draw a small circle on the ground, and then each person must first hit in the top circle, the jump out, jump out of the rotation of the gyro must still be considered by the results, with a tape measure, furthest away from the center of the small circle who is the winner. Five point game Put it on the floor or a chair, a table of available disk [instead of] round biscuit box cover, then fifty centimeters away from the disc, draw a line as a starting point for everyone, from a starting point of the line to pull the disc throw, who can enter the rotary disc even cross the border, the loser is eliminated. Six, hit game Wrestling with the same size gyro better. Seven Rings game Rings game used gyro, the lower shaft axial length shorter than better. Central has a round hole hole looking thin apron, or thin hoops. When the gyro rotates quickly into the hands of the trap on the axis of the center circle, one at a time, until the gyro stops to see who is _set_ into the most, whoever wins. Eight, played Creek Open to draw a line on each side 50 meters wide and 100 meters (depending on the number to see the venue), two or more people to be able to play 10, 20 digits. First game when people turn rewind ghost. Hit B from A, ahead of any person who does not turn the gyro itself against another alternate when the devil was going to hit the other side. Each person can use the gyro Diamond ten nail down.
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Gyro Introduction
China's first entertainment - Gyro Also as Rudra, Hokkien called "dry music", the North called "ice Ga" or "hit the cow" in English is called "spinning top", Japanese with "independent music" and is called "KOMA" . Children's toys, a little like a conch shape, made of wood used for the following iron tip, when playing with a rope wrapped, hard drawstring, so upright rotation. Some made with iron, the use of elastic spring rotation. Ancient traditional gyro is roughly obconic wood or iron, there are a variety of modern materials and shapes appear. Gyro, teenagers are very familiar toys. Now, this toy has swept the world. China is the top of the home. From our Xiaxian Neolithic sites in Shanxi, the excavated stone top. Visible, at least in our top four or five thousand years of history. In the Jin Dynasty, 1700 years ago, China has also emerged another interesting toy - bamboo dragonfly. Such toys to Europe after the 18th century, Westerners called "China gyro" visible, real gyro earlier than this to spread abroad. Why bamboo dragonfly called "China gyro" mean? Had formally proposed "top" of the term, is a mid-19th century French physicist Brocade. In English, the gyro is the "rotator" means. Top rotary switch in the earth body, bamboo dragonfly is rotors turn in the air, so it can be said bamboo dragonfly is a gyroscope. It would appear that all rotating body can be seen as a gyroscope. As we play diabolo, acrobatics in the rotating disk, play dishes, throw the hat, the rapid rotation of the ballet, are using the gyroscope principle. The world around us, everywhere you can see the gyro. Small atoms, large earth is turning the "top."
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Classic songs - "gyro"
"Gyroscope" Song: Fei Xu Wan Xiaoli Lyrics: Wan Xiaoli Lyrics: Wan Xiaoli, Composer: Pu of attorney (Wan Xiaoli) Album: all this did not imagine so bad Xu Fei Wan Xiaoli to join the common interpretation of "gyro" FLASH MV filling microcosm of life for centuries MV watch: http://www.tudou.com/programs/view/GwXERpHgsF0/ Turn on the field Turn in the breeze Fragrant flowers floating in turn Turn in silence In turn solitude On the knot with ice on the lake turn Laughter in turn In tears in turn In the burning life turn In turn white in In turn blood red in Aging in your face in turn has If I can stop I want to open my glasses Looking at how you leave But I can not stop Can not be cheering for you Please put your hands loosen Turn in the glass In turn nightmare In the sinister conspiracy in turn In the desire in turn Struggling in turn In the unmasked numbness in turn On a sunny day You hand over your face Said to me, you're tired You throw in the hands of the props Began cursing the game Say you've always wanted to give up But it can not stop the transfer ROTA Raised high your whip ROTA ROTA Gently close my eyes
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Wikipedia Encyclopedia
tuoluo Gyro top Around the fulcrum for the high-speed rotation of the rigid body. Because of the support in the form of rigid body shape and mass distribution of a variety of different forms of the gyro. Gyro high speed, so it has some special dynamics. In engineering, the mechanical properties of the application made Gyro Gyro different functions, called gyroscopes. Fulcrum and rigid body centroid coincides called gyro balanced gyro. Otherwise known as gravitational gyro. Rigid body mass evenly distributed, and its geometric symmetry axis for rotation axis gyro called symmetric top. In this case, the rigid body to the fulcrum of the inertia ellipsoid called rotational ellipsoid, the rigid body to the rotational inertia of the axis of symmetry is called the polar moment of inertia, normally □ means; rigid for the other two through the fulcrum axis of inertia (see inertia tensor) of the equatorial moment of inertia referred to the moment of inertia, normally expressed in □. Gyro is a rigid body motion around the fulcrum, so rigid body kinematic and kinetic equations are applicable to fixed-point movement Gyro. A brief history of the establishment of the dynamic equations of Euler and Euler kinematic equations of the 18th century, as the theoretical foundation gyroscopic motion. But to create a practical gyroscope has experienced a long period of exploration. The mid-19th century, with the advent of the steel shell of the ship, originally used magnetic compass no longer apply, so gyro navigation requirements become increasingly urgent. In World War I, the U.S. Navy made a gyro navigator, and was quickly adopted by other countries. With the development of maritime and aviation industry, has become an indispensable gyroscope precision navigation instruments. Appeared in the early 20th century aircraft gyro stabilizer and autopilot. But until 1940, the gyro compass magnetic compass was completely replaced in 1950, appeared in the inertial navigation system. No matter how sophisticated gyro manufacturers have to completely eliminate friction bearings and to coincide with the center of mass and the pivot is impossible, and therefore will have the role of external disturbance torque, causing the slow precession of the spin axis of the gyro, gyro drift is called . This time, the angular velocity of precession angular velocity called drift. Gyro drift is a measure of the size of the angular velocity gyro accuracy level mark. To minimize drift, the main research topics of modern gyro moment is how to achieve interference-free support. The main approach is to replace the electric field force support, achieved without the support suspension. If the rotor is a standard spherical, the center of force of the electric field, so that the friction-free suspension. Another way is to use magnetic force to achieve the suspension of the rotor, the rotor must be used but requires the manufacture of a superconductor, the magnetic force perpendicular to the surface of the spherical rotor surface does not penetrate it. This is the modern electric and magnetic gyro gyro basic idea. Several features gyroscope gyroscope gyroscope in a given axial rotation, external lines above it if the role of the main moments fulcrum (see torque) is zero, the angular momentum theorem, then gyroscope for angular momentum fulcrum conservation of angular momentum in the movement direction remains unchanged. □ angular velocity rotation around the vertical axis of symmetry symmetric top (Figure 1 Schematic fixed axis gyroscope), which is supported on the tip of a smooth level surface. Its reaction force of gravity and the fulcrum P N through the fulcrum O, so that its angular momentum conservation □ □, □ in motion that is always directed to a fixed direction with the independent movement of the support surface. This feature is called the fixed axis of the gyroscope. Symmetric top fulcrum and its centroid coincides gyro called balanced symmetric top. If no other external force, friction is not considered such a gyro inertial rotation will be called freedom gyro. When this initial angular velocity gyro inertia axis along the direction remains the same direction can make the shaft. Gyroscopic precession of the gyroscope when subjected to external torque M □ role for the fulcrum O by the angular momentum theorem □, where L □ is the fulcrum O gyroscope for angular momentum. If L □ as a fulcrum radius vector in origin, then the above equation indicates that the moment vector M □ can be seen as the end of the radius vector of the velocity vector, Ω indicates that the terms of the radius vector around the fulcrum of the angular velocity vector, there M □ = Ω × L □, Ω is called gyroscopic precession angular velocity. The corresponding movement is called precession (Figure 2a schematic gyro precession). For high-speed rotation of the gyro symmetric, L ≈ □ □, then M □ ≈ Ω × □ □. This feature is called gyroscopic precession sex. For symmetric top (Fig. 2a gyroscopic precession of the diagram), it will produce precession (Fig. 2b gyroscopic precession of the diagram) under the action of gravity on the fulcrum moment. In size with a constant angular velocity magnitude and direction □ constant angular velocity Ω precession movement, and the angle □ □ keeping with Ω
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English Expression
: toy that spins on a point when it is set in motion by hand or by a string, etc, spinning top, spinning-top, gyro