These days, in water cubic metre lively and extraordinary, world record time and again by refresh, drew countless looks. So is natant project how transitional? Today, we upright with respect to help carry on, may be opposite those " in billow white " understand somewhat.
Swimming is the Olympic Games go up the angriest musical sound is smooth the agonistic project that hubbub stimulates raise.
Flood dragon dragon gives the crawl like water (contemporary swim those who say for crawl) , billow wing turns over the butterfly stroke that fly, pillow billows lies the backstroke of wave, "Can Qu Nengshen " breaststroke, in the lane of 8 sky blue each exhibit charm, gold silver medal excels 1% second definitely likewise.
Although swim,agonistic project and Olympic Games are the same as age, but 20 individual event that before 3 settings cross already had 85% to be washed out. Inchoate crawl is to point to " eight saints go across the sea " aleatoric pose.
■ the swimsuit changes
Wear swimsuit to compare naked swim obstruction decreases 7%
The Olympic Games at the beginning of, swimsuit knits tabby cloth and collect grain cloth to be made with cotton, wrap up water again laxly, bring very great resistance. The fabrics of abb and silk makes natant outfit more close gradually collect and close-fitting.
And absurd and stale morality sense ever will swim for a time take regard as heretical. How do the 7th carry off on defend general Olympic Games the United States of 3 natant champion " female flying fish " Bulaiteleiyin wears knickers to swim in the seaside and arrest, "Moralistic home " the charge that brings to her is " decency having an injury " .
1975, holand scholar is in boat chamfer wear with do not wear swim take undertake contrasting experimenting, discovery is worn swim take than naked swim obstruction decreases 7% . The reason is the person regards limb as the animal, plant through this " wrap up " and enclothe, can make systemic curve more flowing and adjacent clipper-built, swim from this take " those who wear contend for " come to an end.
1988 on Seoul Olympic Games, of American team " Hercules " swim take equipment to suffer fix eyes upon, polyurethane fine peace keeping exceeds fine nylon fiber to make swim not only the weight that take is reduced once more, two-way retractility and integral smoothness are achieved do not have temporarily of 2 perfect.
Sydney Olympic Games became shark skin to swim 2000 take " big beautiful desk " .
■ uncover secret
Run what swim for what comparing is fast
Why doesn't the person sink in water? Actually human body the composition of 70% is water, average density is in 0.96 to 1.05 between. The adult of figure of a level suffers buoyancy effect, the head shows the body when surface to weigh about 3 kilograms.
The join forces of body flotage is nodded namely " centre of buoyancy " decide by the geometrical center of departmental cent in body water intrusion, with human body centre of gravity not coincide, because proportion is small,the upper part of the body and tend rise, lower limbs because proportion is large and tend sink, meeting generation turns round pitching moment. If make the same score the arm,had extended a head to be able to make centre of buoyancy and centre of gravity more stood by.
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