浮力原理的演示实验封承显，柴正康，闻祥，赵若斌（北京教育学院物理系）一、原理浸在液体里的物体所受到的浮力，产生于上下底面所受到液体的压力差．由于下底面所受向上的压强大于上底面所受的向下的压强，故浸在液体里的物体会受到向上的浮力．二、特点及用途１．“浮... Demonstration experiments on buoyancy theory Feng Chengxian, Chai Zhengkang, Wen Xiang, Zhao Ruobin (Physics Department, Beijing Institute of Education) I. Principle The buoyancy of an object immersed in a liquid is caused by the pressure difference between the liquid under the upper and lower surfaces. Since the pressure on the bottom surface is greater than the pressure on the bottom surface, the objects immersed in the liquid will be subject to upward buoyancy. Second, characteristics and uses 1. "float...