磁悬外置式真空不能传声实验装置

摘要

A simple vacuum device was designed using a sealed syringe to obtain an approximate vacuum environment .Basing on the principle that like magnets poles repel each other , the sound source was suspended ,and the receiver was put outside .This design avoided the sound transmission through the container .%利用密闭注射器得到近似真空的环境，设计了简易真空不能传声实验装置。该装置利用同极磁铁相互排斥原理，使发声体悬浮，并将接收声音的装置放在发声系统外部，避免了容器本身传递声音。