大家知道吗?无论力学、热学、光学还是电学,各种物理现象大都可以在人体上得以演示。例如:两手相握,体会力是物体间的相互作用;坐在宽窄不同的板凳上体会压强与受力面积间的关系;用嘴吹贴在嘴边的纸条,或用笔杆、软吸管竖直向上吹乒乓球,体会流体的流速与压强的关系;堵住耳朵听 Do you know that regardless of mechanics, thermals, optics, or electricity, a variety of physical phenomena can be demonstrated on the human body. For example: the two hands hold each other, and the physical force is the interaction between the objects; the relationship between the pressure and the area under pressure on the benches with different widths and widths; the paper sticking to the mouth with the mouth, or the vertical extension of the soft straw Plunge the table tennis ball upright and realize the relationship between the flow velocity and pressure of the fluid; block the ear and listen