Rayleigh disk

英 美
  • 瑞利盘,瑞利斑
  • disk n.圆盘;唱片;花盘;磁盘;盘形物
  • rayleigh n.【天文学】瑞利(亮度单位);瑞利(姓氏)
Noun:
  1. an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity