声波在空气中传播伴随有能量,辐射到一障碍物(或接受体)上会形成压力(即声压).声压对接受体则能做功.下面做实验看看:器材准备:用光滑纸(或塑料薄膜)扎封广口玻璃瓶(或陶罐)口,并在封口纸中间用锥子穿上小孔(直径约5mm).大米十余颗、扩音话筒.实验操作:先将用纸封了口的大玻璃 Acoustic waves are accompanied by energy in the air, and they are radiated to an obstacle (or receptor) to create pressure (that is, sound pressure). The sound pressure can do work to an acceptor. Let’s take a look at the following experiment: Equipment Preparation: Use glossy paper (or plastic film) Zhafeng wide-mouth glass bottle (or pottery) mouth, and in the middle of the sealing paper with a hole in the awl (diameter of about 5mm). Rice more than ten stars, amplified microphone. Experimental operation: first use Paper sealed glass