很强，以色列科学家通过测量灯泡的震动来还原声音。
Real-Time Passive Sound Recovery from Light Bulb Vibrations
相关的新闻：https://www.forbes.com/sites/daveywinder/2020/06/14/how-to-use-an-ordinary-light-bulb-to-spy-on-conversation-80-feet-away-security-research-lamphone-hack/#5762343a5be1