radiometer

English Thesaurus

1. meter to detect and measure radiant energy (electromagnetic or acoustic) (noun.artifact)

hypernym	:	meter,
definition	:	any of various measuring instruments for measuring a quantity (noun.artifact)

hyponym	:	crookes radiometer,
definition	:	electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight (noun.artifact)

hyponym	:	radiomicrometer,
definition	:	radiometer that is extremely sensitive (noun.artifact)

hyponym	:	rayleigh disk,
definition	:	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 (noun.artifact)