ScienceAugust 16, 2026

radiometer

RAY-dee-om-ih-ter

Definition

An instrument used for detecting and measuring the intensity of radiant energy, such as electromagnetic radiation.

Etymology

The word is derived from the Latin 'radius' (ray) and the Greek 'metron' (measure). It entered English in the late 19th century to describe devices built to measure radiation.

In the news

In the article, an imaging radiometer is identified as a scientific instrument carried by the IM-4 mission to take mineralogical and thermophysical measurements on the lunar surface.

Space Coast launch schedule:

Read the full article ↗

Orlando Sentinel

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