真空不能传声的实验演示

Demonstration on inability of transmitting sound in vacuum

利用音乐集成块作声源 ,通过功放电路放大声音 ,并利用闪烁电路指示声电装置通电 ,制作了声电隔音装置 。

Using music integrated package as sound source, enlarging sound by power amplifier, and using scintillating circuit to indicate the device's on off state, a sound electric device is made up. This self made device can demonstrate the inability of transmitting sound in the vacuum.