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你知道空气是可压缩的吗?压缩空气为什么能对物体做功呢?做做“压缩空气射发‘纸弹’”实验,就可知道其中缘由。准备实验材料:荆竹筒一段(口径约6mm,长约16cm)(或用相同尺寸的硬塑料管或金属管);圆竹(木)筷作施压棍,长度比竹筒稍长,一端加竹制帽盖(或用牙膏管盖代替);纸团用水
Do you know that the air is compressible? Why can compressed air do work on objects? As an experiment to “compress compressed air to eject ’paper bombs’, one can understand why. Prepare experimental materials: a section of a bamboo barrel (about 6mm in diameter, about 16cm in length) (or a hard plastic tube or metal tube of the same size); round bamboo (wood) chopsticks as a pressure stick, slightly longer than the bamboo tube, one end added bamboo Cap (or replace with toothpaste tube cap); paper ball with water