radiomicrometer
/ˌreɪdioʊmaɪˈkrɑmɪtər/
noun
- A sensitive instrument used to measure very small amounts of radiant energy or heat.
- Engineers used a radiomicrometer to test the heat output of the new electronic component.
- The radiomicrometer detected tiny temperature changes from the distant star.
- With a radiomicrometer, researchers could measure the infrared radiation emitted by a single leaf.