Spectrometer
/spɛkˈtɹɒm.ɪ.tə/
"Spectrometer" in a Sentence (3 examples)
Using a special instrument called a spectrometer, observations of Eris show it has frozen methane on its surface.
The Pathfinder Lander carried onboard a robotic rover named Sojourner. The 10 kilogram solar-powered rover was equipped with a spectrometer used to analyze the chemical composition of Martian rock and a camera which relayed images of the landscape back to Earth.
A spectrometer uses light to identify the chemical composition of matter.