论文部分内容阅读
为什么人类运动速度最慢的形式之一——游泳会使国家为优胜者感到如此的自豪呢?文森特·马利特的新著《夏季奥运会科学》中的一段话有助于解释其原因何在: “在水中,阻力是最为重要的事。游泳运动员要在比空气密度大773倍、粘稠度大55倍的一个要命的环境里笨拙地拼搏。每移动一下都要付出极大的能量。阻力和动力呈平方和立方的关系上升。在水中,速度增加1倍,动力输出要增加8倍……游泳速度加快10％,动力输出要增加33％。人们想出种种办法与阻力抗争:刮体毛可使男游泳运动员游100米加快整整一秒钟;密织合成微纤维制的游泳衣的阻力甚至比人的皮肤的阻力还小
Why is swimming one of the slowest forms of human movement - is swimming pride that country is the winner? Vincent Mariet’s new paragraph in “The Summer Olympic Science” helps to explain why WHAT IS: “Resistance is paramount in water, and swimmers struggle awkwardly in a deadly environment that is 773 times more dense and 55 times more viscous.” Every time you move, you have to pay a great deal of energy . Resistance and power in the square and the relationship between the rise in water, double the speed, power output to increase 8 times ... ... swimming speed to accelerate 10%, power output to increase 33% people come up with a variety of ways and resistance to fight: Scraping body hair can make male swimmers swim 100 meters to speed up a whole second; dense synthetic microfibre bathing suit resistance even lower than the human skin resistance