“听到光”实验

An experiment of “hearing light”

用交变光波照射一个半涂黑玻璃瓶,可听到瓶中发声.其物理原因是交变光能激发了瓶中的一个声波共振模.

When an alternating light irradiate on a transparent glass bottle with a half inner wall coated by black regalia,a sound in the bottle can be heared. The reason is that the light produce heat which excites a sound resonance mode of the bottle.