了解什么是理想推理法,可以从两个故事开始。伽利略曾经做过一个著名的斜面实验:如图1,在AB斜面的A处由静止释放一颗钢珠,钢珠会滚上右边BC斜面,且滚到与A点基本棚同的高度,伽利略通过科学推理,认为:如果忽略摩擦力带来的影响,钢珠从左边滚下后,再沿有边的斜面滚上,钢珠将上升到与左边释放高度相同的点:若将右边斜面的倾斜角减小,钢珠还是会上升到原来的高度,但通过的路程比原来更长:假设右边斜面变为水平而,钢珠想要达到原来的高度,将永远运动下去. Learn what is the ideal reasoning method, you can start from two stories. Galileo has done a well-known slope experiment: as shown in Figure 1, at A of the beveled surface, a ball is released from rest. The ball will roll on the right BC bevel and roll to the same height as the A-point basic shed. Galileo passed the science Reasoning, that: If you ignore the impact of friction, the ball rolling down from the left, and then roll along the edge of the ramp, the ball will rise to the same height as the left release point: If the right slope of the ramp angle is reduced , The ball will still rise to the original height, but the route is longer than the original: Assuming the right bevel becomes horizontal, the ball wants to reach its original height and will move forever.