Conventional loudspeakers produce sound by vibrating back and forth, but new speakers made from sheets of carbon nanotubes create music the way lightning generates thunder.

• 传统扩音喇叭是藉由振膜前后震动发出声音，但以奈米碳管薄膜制作而成的新型喇叭，其发声原理则和闪电产生雷声的原理一样。