液体浮力产生原因演示器

Demonstration of the cause of buoyancy

针对学生难以理解和掌握液体浮力产生原因的问题,利用烧杯、石蜡等简易材料设计并制作了液体浮力演示装置.该实验装置可以通过控制烧杯中石蜡上下表面受到液体压力来操纵石蜡的沉浮,进而演示出浮力的实质.

It is difficulty to understand the cause of buoyancy. Using some familiar materials such as beaker and paraffin, the author made a device to demonstrate the cause of buoyancy. By controlling the upper and lower surface pressure of paraffin, the paraffin is observed to float ups and downs, the nature of buoyancy could then be demonstrated.