Rayleigh disk

Definitions of Rayleigh disk

n 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

Type of:
meter to detect and measure radiant energy (electromagnetic or acoustic)

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.