麻豆约拍

We visit the Institute of Sound and Vibration Research in Southampton to see how powerful sound can be. The expert explains how sound is caused by vibrations. The loudness of a sound depends on the size of the vibration. The bigger the vibration, the louder the sound. The size of the vibration is called the amplitude. The bigger the amplitude, the louder the sound. A drum, polystyrene balls, a tower of blocks, a glass plate and a speaker are used to demonstrate the sound generated by vibrations, and how those vibrations are transferred to other objects.