声音工程的魔力：杯子制成的简易扩音器

摘要

＜正＞用纸杯和纸巾筒放大智能手机里播放的音乐！这个实验可以让你玩转声波科学。What you need·Two paper or plastic cups两个纸杯或塑料杯·Paper towel roll纸巾筒·Scissors剪刀·Marker马克笔What to do1. Trace the outline of the circle on the end of the paper towel roll onto the side of each cup with a marker.