Radhakrishnan V
Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India.
Proc Natl Acad Sci U S A. 1998 May 12;95(10):5448-55. doi: 10.1073/pnas.95.10.5448.
To move on land, in water, or in the air, even at constant speed and at the same level, always requires an expenditure of energy. The resistance to motion that has to be overcome is of many different kinds depending on size, speed, and the characteristics of the medium, and is a fascinating subject in itself. Even more interesting are nature's stratagems and solutions toward minimizing the effort involved in the locomotion of different types of living creatures, and humans' imitations and inventions in an attempt to do at least as well.
无论是在陆地上、水中还是空中移动,即使是匀速且在同一高度移动,也始终需要消耗能量。根据物体的大小、速度和介质的特性,需要克服的运动阻力有许多不同类型,其本身就是一个引人入胜的课题。更有趣的是,自然界为尽量减少不同类型生物移动所需的努力所采用的策略和解决方案,以及人类为了至少能达到同样效果而进行的模仿和发明。