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浮力本质是：浸在液体（或气体）中的物体，受到液体（或气体）向上和向下的压力差。关于浮力本质的演示实验，通常见过的都不太规范，可操作性不强，为此我们在教学中总结经验，设计了这个实验。a．结构与原理。如图１所示。b．材料与制作。①取４mm厚有机玻璃，做一方形水槽
Buoyancy is essentially an object that is immersed in a liquid (or gas) and is subjected to a pressure difference between the upward and downward pressure of the liquid (or gas). The demonstration experiments on the nature of buoyancy are usually not standardized nor operability. Therefore, we sum up experience in teaching and design this experiment. a. Structure and principle. As shown in Figure 1. b. Materials and production. 1 Take 4mm thick plexiglass and make a square sink