spectrometer
/spɛkˈtrɑmɪtər/
noun
- A scientific instrument that measures the properties of light or other radiation over a range of wavelengths, used to identify materials or study their composition.
- In the lab, the spectrometer helped identify the unknown substance by its light spectrum.
- Astronomers pointed a spectrometer at the star to learn what gases it contains.
- The chemist used a spectrometer to analyze the metal sample.