Shark's skin is elastic and can bounce off toxic substances in water. Shark's skin is very rough, and it is covered with many dentate objects called shield scales. It consists of an ivory cavity covered with enamel, which can protect the body from being scratched by rocks.
According to the characteristics of shark skin, a swimsuit was invented. When the weather is very hot in summer, many people choose swimming to cool down. There are many people in the swimming pool, and collisions often occur.
If you add a miniature warning device on both sides of the swimsuit, when someone approaches you, there may be a collision, and the warning device will vibrate to remind both sides. After swimming ashore, you will find that the swimsuit is very absorbent, so you have to wring the water out before putting it in the bag. If a "waterproof agent" is added to the outer layer of the swimsuit, once it goes ashore, the water on the swimsuit will slide down and will not stick to the body, so it will be much easier to take it off.
Every tool has its shortcomings, and as long as you keep improving it, it will become more useful.
2. Scientists write a composition according to the article about sharks inventing swimsuits. This 400-word swimsuit is made by human imitating shark skin. Shark's skin is elastic and can bounce off toxic substances in water. Shark's skin is very rough, and it is covered with many dentate objects called shield scales. It consists of an ivory cavity covered with enamel, which can protect the body from being scratched by rocks. According to the characteristics of shark skin, a swimsuit was invented.
When the weather is very hot in summer, many people choose swimming to cool down. There are many people in the swimming pool, and collisions often occur. If you add a miniature warning device on both sides of the swimsuit, when someone approaches you, there may be a collision, and the warning device will vibrate to remind both sides.
After swimming ashore, you will find that the swimsuit is very absorbent, so you have to wring the water out before putting it in the bag. If a "waterproof agent" is added to the outer layer of the swimsuit, once it goes ashore, the water on the swimsuit will slide down and will not stick to the body, so it will be much easier to take it off.
Every tool has its shortcomings, and as long as you keep improving it, it will become more useful.
3. About "Shark Skin" Swimsuit Shark Skin Swimsuit
Chinese name: shark skin swimsuit
Also known as: Magic Swimsuit, SPEEDO Swimsuit, LZRRacer Swimsuit, Fast Leather.
English name: shark skin swimsuit
In the swimming competition of Sydney Olympic Games, ian thorpe, an Australian, wore a black one-piece swimsuit, like a shark moving in the blue waves, breaking the waves and winning three gold medals in one fell swoop. His shark skin swimsuit became famous in the swimming world.
Shark skin swimsuit is nicknamed according to its appearance. In fact, it has a louder name: Kuaipi, and the core technology is to imitate shark skin. Biologists have found that rough V-shaped wrinkles on the surface of shark skin can greatly reduce the friction of water flow, make the water flow around the body more efficient, and sharks can swim quickly. Fast skin's ultra-stretched fiber surface is completely made by imitating the surface of shark skin. In addition, this swimsuit also fully integrates the principles of bionics: imitating human tendons at the seams to provide power for athletes to stroke backwards; Imitate human skin on the fabric, which is elastic. The experiment shows that the fast skin fiber can reduce the resistance of water by 3%, which is of great significance in the swimming competition where 1% seconds can decide the outcome. 1999 10, FINA officially allows athletes to wear fast leather to participate in the competition.
For years, people have been exploring what kind of swimsuit to wear to swim faster. The resistance that swimmers encounter in water is directly proportional to the density of water, the frontal lobe area of swimmers, the friction coefficient and the square of the speed of swimmers, so reducing the frontal lobe area and friction coefficient is the key to designing low-resistance swimsuits.
restart
Speedo products
First generation shark skin
FASTSKIN in 2000
Imitating shark skin structure with fiber can guide the surrounding water flow, reduce water resistance and improve swimming speed by 3%~7.5%. As a representative of shark skin, this swimsuit was popular all over the world in Sydney Olympic Games, and 83% of the contestants chose to wear shark skin to participate in the competition.
Second generation shark skin
FASTAKIN 2 in 2004
On the basis of 1 generation, adding granular dots on the surface of the fabric reduces the water resistance by 30%, and the overall functional ratio of 1 generation increases by 7.5%. In the 2004 Athens Olympic Games, 47 athletes who won medals walked onto the podium in this swimsuit.
Third generation shark skin
FASTAKIN FS_PRO in 2007
It consists of oxygen-isolating elastic yarn and superfine nylon yarn. Its elasticity is 15% higher than that of similar products, which can reduce muscle vibration and energy loss. In 2007 1 year, he helped athletes from all over the world break the world record of 2 1 time.
The fourth generation shark skin
2008 FASTSKIN LZR racing car
The fourth generation is made of LZR Pulse fabric, which has extremely light weight, low resistance, waterproof and quick-drying performance. It is the first wrinkle-free competition swimsuit produced by high-tech welding in the world. Among the new world records 1 6 set in the past1month, there are 14 items created by swimmers wearing this bathing suit.
4. Help write a paper on the physical knowledge of shark skin swimsuit. Shark skin swimsuit is nicknamed according to its appearance. In fact, it has a louder name: Kuaipi, and the core technology is to imitate shark skin. Biologists have found that rough V-shaped wrinkles on the surface of shark skin can greatly reduce the friction of water flow, make the water flow around the body more efficient, and sharks can swim quickly. Fast skin's ultra-stretched fiber surface is completely made by imitating the surface of shark skin. In addition, this swimsuit also fully integrates the principles of bionics: imitating human tendons at the seams to provide power for athletes to stroke backwards; Imitate human skin on the fabric, which is elastic. The experiment shows that the fast skin fiber can reduce the resistance of water by 3%, which is of great significance in the swimming competition where 1% seconds can decide the outcome. 1999 10, FINA officially allows athletes to wear fast leather to participate in the competition.
"Shark skin" swimsuit has spent a lot of manpower and material resources in the development process, so its price is not cheap. The cost of a swimsuit is about 7000 yuan. In order to achieve the best effect, one can only be worn six times. Such an expensive swimsuit may be nothing to the well-paid European and American athletes, but it is far behind some African athletes. Choosing' shark skin' means that you should not only wear it in the competition, but also adapt to it in daily training. It costs an average of 1000 yuan each time, which is really a big sum. This will easily lead to the polarization of athletes' performance due to income differences.
Shark skin is also very complicated to wear. In order to make the swimsuit wrap the human body as tightly as possible, you must first put plastic bags on your hands and feet, and then several people push them up with their fingertips. You must never pull it hard. A designer said that the wavy zipper on the back of this swimsuit is also designed quite accurately. "The zipper must be close to the spine, and it will automatically collapse if it is slightly worn."
Mu Xiangxiong, a veteran swimmer in China, questioned the magical effect of' shark skin' when interviewed by reporters. He believes that scientific training methods are the main way to improve athletes' performance. "Although some athletes have recently broken the world record by wearing' shark skin', it is hard to say whether this new swimsuit can really improve their performance. Before each Olympic Games, there will always be some world records rewritten, because the players received systematic training before the game and their state was basically adjusted to the best, so it is very easy to achieve results. " Mu Xiangxiong explained, "Moreover, it is impossible to synchronize the effects of' shark skin' with ordinary swimsuits, because we can't prove whether an athlete can break the record of ordinary swimsuits at the same time and place."
In the first generation of shark skin in 2000, FASTSKIN used fibers to imitate the structure of shark skin, which can guide the surrounding water flow, reduce the water resistance and improve the swimming speed by 3%~7.5%. As a representative of shark skin, this swimsuit was popular all over the world in Sydney Olympic Games, and 83% of the contestants chose to wear shark skin to participate in the competition. On the basis of 2004 1 generation, the second-generation shark skin FASTAKIN 2 added granular dots on the surface of the fabric in order to reduce the water resistance by 30%, which improved the overall function by 7.5% compared with 1 generation. In the 2004 Athens Olympic Games, 47 athletes who won medals walked onto the podium in this swimsuit. In 2007, the third generation shark skin FASTAKIN FS_PRO was composed of oxygen-insulating elastic yarn and superfine nylon yarn. Its elasticity is 15% higher than that of similar products, which can reduce muscle vibration and energy loss. In 2007 1 year, he helped athletes from all over the world break the world record of 2 1 time. The fourth generation shark skin In 2008, the fourth generation FASTSKIN LZR racer was made of LZR Pulse fabric, which has extremely light weight, low resistance, waterproof and quick-drying performance, and is the world's first wrinkle-free competition swimsuit produced by high-tech welding. In the past 1 month 16 new world record, there are 13 items created by swimmers wearing this bathing suit. References:
5. What do people get from sharks? With the invention of swimsuit, Sydney Olympic Games changed the pattern of swimming in the world. Almost half of the gold medal winners are wearing a special swimsuit-"one-piece shark suit". This shark suit imitates the skin structure of the overlord shark in the sea. Some rough dentate protrusions are designed on the swimsuit, which can effectively guide the water flow, tighten the body and avoid the vibration of the skin and muscles. The second generation of shark clothing has added some new highlights, adding a material called "elastic skin", which can reduce people's resistance in water by 4%. In addition, two accessories have been added. The bumper made of titanium silicone attached to the forearm can make it easier for athletes to swim, and the vibration control system attached to the chest and shoulders can help guide the water flow.
The second generation sharks ruled the swimming pool.
In the men's swimming competition of Athens Olympic Games, it will be their equipment: the second generation shark suit FS2, which will shine together with American swimming prodigy Phelps and other famous players.
As one of the emerging products of Olympic science and technology, shark costume was not widely concerned by the world until the Sydney Olympic Games four years ago. At the Sydney Olympic Games in 2000, more than 30 athletes including Thorpe1jumped into the swimming pool wearing the first generation shark costume-FS1,and as a result, they won 26 of the 32 swimming gold medals.
Swimming is an ancient event of the Olympic Games. In the 1940s, swimmers who used to wear linen and other fabrics began to use silk swimsuits. In the late 1950s, with the development of petroleum technology, nylon swimsuits became popular all over the world and appeared in Olympic swimming pools in large numbers. At the 1972 Munich Olympic Games, many athletes won the Olympic gold medal just by one-way telescopic sweaters and swimsuits. The FS 1 shark suit appeared in the last Olympic Games imitates the skin of sharks, which makes swimmers' swimsuits cling to their bodies when they travel in the water, effectively reducing the swimming resistance and the pressure resistance of athletes' bodies. It is said that the second generation shark swimsuit FS2 not only inherits many advantages of FS 1, but also draws lessons from the dynamic principle in aircraft design, and designs some rib-like protrusions on the back and buttocks of the swimsuit, so that the contestants can reduce the water resistance of 10% when traveling. The market price of each FS2 exceeds 4,800 RMB.
6. Introduce men's shark skin swimsuits. On the first day of the swimming final of the Beijing Olympic Games, the Water Cube repeatedly set off a record-breaking * * *.
The creators of these new records have one thing in common, that is, they all wear magical "shark skins". In fact, since the fourth generation of "shark skin" came out at the beginning of this year, at least 52 world records have been broken in just a few months, 48 of which were created with the help of this magical swimsuit.
Although some people call it "science and technology stimulant", under the temptation of competition results, swimming teams from many countries are involved. □ Morning News reporter Han Xiaoni set 52 new records in a few months. In the morning 10, the first swimming gold medal of the Water Cube was born.
In the men's 400-meter individual medley final, American "Golden Boy" Phelps not only defended the gold medal with an absolute advantage one and a half places ahead of the second place, but also broke the world record with a score of 4 minutes 03.84 seconds. This is also the first world record for the birth of the Beijing Olympic Games.
You know, Phelps was only wearing half a set of "shark skin" at this time. In the competition, Phelps wore Speedo's tight swimming trunks on his upper body and lower body.
Not to be outdone, Australian teenager Stephanie Rice suddenly improved the women's 400-meter medley world record by nearly two seconds. On the first day of the swimming final of the Beijing Olympic Games, the Water Cube set records again and again.
If you look closely, you will find a similarity: these swimmers are all wearing magical "shark skins". In fact, since Speedo's LZRRacer came out at the beginning of this year, the international swimming community has set off a wave of record-breaking frenzy.
In just a few months, at least 52 world records have been broken, and the creators of 48 records are all wearing "shark skin". You know, the new world record of 16 was born in 2007.
The amazing numerical comparison can't help but sigh the great power of "shark skin". As Richard Godfrid, chief physiologist of the British Olympic Medical Center, pointed out, the high-tech content of athletes' equipment is becoming an important factor in determining who can win the championship.
"Most athletes have little difference in physical fitness, so it is particularly important to pay attention to details. The difference between Olympic medals is often one hundredth of a second, which makes the role of sports science and technology equipment more and more obvious. "
"It feels like a rocket." The name "shark skin" is no stranger to swimmers. As early as 10 years ago, the first generation of "shark skin" came out.
At the 2000 Sydney Olympic Games, Thorpe, an Australian star, braved the waves in a "shark skin" and won three gold medals in one fell swoop. This made it the most striking technological innovation at that time.
On the basis of the first generation, the second generation of "shark skin" added granular protrusions on the fabric surface. This design was once again affirmed by the competition results at the 2004 Athens Olympic Games-all 47 swimmers who won medals wore this swimsuit.
In 2007, the third generation "shark skin" was improved in material, which reduced muscle vibration and energy loss. At the beginning of this year, after the fourth generation of "Shark Skin" came out, it almost overshadowed any athlete or coach and became the most controversial star in the swimming competition of the 2008 Olympic Games.
It is said that compared with the second-generation "shark skin" in 2004, the water resistance of the new swimsuit is reduced by at least 10%, the oxygen consumption is reduced by 5%, and the performance is improved by 2%. And this 2% is the distance of half a body position, which is also the guarantee of gold medal.
This year's Olympic Games poses a great challenge to the design of new swimsuits. FINA prohibits the use of swimsuits that can generate buoyancy.
To this end, the design team scanned the bodies of more than 400 excellent swimmers in three dimensions. The new version of "Shark Skin" uses special materials to compress the muscles of the most resistant parts of the human body, such as the chest and buttocks, so as to shape the athletes' bodies as streamlined as possible.
In order to achieve these goals, this swimsuit is 70 times more important than ordinary swimsuits. Swimmers spoke highly of this swimsuit.
Phelps said, "When I touch water, I feel like a rocket. I can't wait to go swimming. " Hackett's description is more vivid. He said wearing this bathing suit was "like a sharp knife cutting butter".
& gt& gt Enter the Olympic Games Information System, and five data products help you understand the real-time competition process.
7. Introduce men's shark skin swimsuits. On the first day of the swimming final of the Beijing Olympic Games, the Water Cube repeatedly set off a record-breaking * * *.
The creators of these new records have one thing in common, that is, they all wear magical "shark skins". In fact, since the fourth generation of "shark skin" came out at the beginning of this year, at least 52 world records have been broken in just a few months, 48 of which were created with the help of this magical swimsuit.
Although some people call it "science and technology stimulant", under the temptation of competition results, swimming teams from many countries are involved. □ Morning News reporter Han Xiaoni set 52 new records in a few months. In the morning 10, the first swimming gold medal of the Water Cube was born.
In the men's 400-meter individual medley final, American "Golden Boy" Phelps not only defended the gold medal with an absolute advantage one and a half places ahead of the second place, but also broke the world record with a score of 4 minutes 03.84 seconds. This is also the first world record for the birth of the Beijing Olympic Games.
You know, Phelps was only wearing half a set of "shark skin" at this time. In the competition, Phelps wore Speedo's tight swimming trunks on his upper body and lower body.
Not to be outdone, Australian teenager Stephanie Rice suddenly improved the women's 400-meter medley world record by nearly two seconds. On the first day of the swimming final of the Beijing Olympic Games, the Water Cube set records again and again.
If you look closely, you will find a similarity: these swimmers are all wearing magical "shark skins". In fact, since Speedo's LZRRacer came out at the beginning of this year, the international swimming community has set off a wave of record-breaking frenzy.
In just a few months, at least 52 world records have been broken, and the creators of 48 records are all wearing "shark skin". You know, the new world record of 16 was born in 2007.
The amazing numerical comparison can't help but sigh the great power of "shark skin". As Richard Godfrid, chief physiologist of the British Olympic Medical Center, pointed out, the high-tech content of athletes' equipment is becoming an important factor in determining who can win the championship.
"Most athletes have little difference in physical fitness, so it is particularly important to pay attention to details. The difference between Olympic medals is often one hundredth of a second, which makes the role of sports science and technology equipment more and more obvious. "
"It feels like a rocket." The name "shark skin" is no stranger to swimmers. As early as 10 years ago, the first generation of "shark skin" came out.
At the 2000 Sydney Olympic Games, Thorpe, an Australian star, braved the waves in a "shark skin" and won three gold medals in one fell swoop. This made it the most striking technological innovation at that time.
On the basis of the first generation, the second generation of "shark skin" added granular protrusions on the fabric surface. This design was once again affirmed by the competition results at the 2004 Athens Olympic Games-all 47 swimmers who won medals wore this swimsuit.
In 2007, the third generation "shark skin" was improved in material, which reduced muscle vibration and energy loss. At the beginning of this year, after the fourth generation of "Shark Skin" came out, it almost overshadowed any athlete or coach and became the most controversial star in the swimming competition of the 2008 Olympic Games.
It is said that compared with the second-generation "shark skin" in 2004, the water resistance of the new swimsuit is reduced by at least 10%, the oxygen consumption is reduced by 5%, and the performance is improved by 2%. And this 2% is the distance of half a body position, which is also the guarantee of gold medal.
This year's Olympic Games poses a great challenge to the design of new swimsuits. FINA prohibits the use of swimsuits that can generate buoyancy.
To this end, the design team scanned the bodies of more than 400 excellent swimmers in three dimensions. The new version of "Shark Skin" uses special materials to compress the muscles of the most resistant parts of the human body, such as the chest and buttocks, so as to shape the athletes' bodies as streamlined as possible.
In order to achieve these goals, this swimsuit is 70 times more important than ordinary swimsuits. Swimmers spoke highly of this swimsuit.
Phelps said, "When I touch water, I feel like a rocket. I can't wait to go swimming. " Hackett's description is more vivid. He said wearing this bathing suit was "like a sharp knife cutting butter".
& gt& gt Enter the Olympic Games Information System, and five data products help you understand the real-time competition process.