浮力历来是初中物理中的重点和难点内容,我们使用的课本(华东版),在讲完阿基米德原理,浮力产生的原因之后,安排了一个验证性实验.从原理上说,上述实验应该容易做成,可实际做起来,却很困难.实验一:取毛玻璃一片,蜡烛一支,将蜡烛点燃,让蜡滴熔在玻璃片,有了一定的体积之后,停止滴熔.稍停,在滴熔的蜡块尚未完全冷 Buoyancy has always been a key and difficult part of junior high school physics. The textbook we use (East China Version), after completing the Archimedes principle and the causes of buoyancy, arranged a confirmatory experiment. In principle, the above experiment It should be easy to make, but it can actually be done, but it is very difficult. Experiment 1: Take one piece of frosted glass, one candle, ignite the candle, let the wax drop melt in the glass piece, after a certain volume, stop drip melting. Stop The wax block melted in the drop is not yet completely cold