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浮力产生演示实验1 原实验的不足物理通报社编写的初中物理课本原实验的所用教具是用透明材料做成一个正方体,在各个侧面开孔,蒙上橡皮薄膜。正方体还装有控制手柄和排气管。演示时,把该正方体浸没在水中,观察各侧面橡皮薄膜向正方体内凹的情况,判断压强的大小,说明浮力的产生。
Buoyancy Production Demonstration Experiment 1 Inadequacies of the original experiment The teaching aid used in the original experiment of the junior high school physics textbook prepared by the Physical Bulletin Agency was made of a transparent material with a square, and holes were punched on each side, and a rubber film was applied. The cube is also equipped with a control handle and exhaust pipe. During the demonstration, the cube was immersed in water, and the rubber film on each side was observed to be concave in the square and the pressure was determined to indicate the occurrence of buoyancy.