Spectroscopy

[Sarah]

The use of the spectroscope; investigations made with thespectroscope.

[Kit]

some chemistry shit,

the study of how chemicals and molecules and shit reaction with electromagnetic radiationnn

INNFRRAAA REDDD

[Lizzy Liz]

the study of the way matter absorbs or sends out light and other radiation (= energy from light or heat that you cannot see) :

[Marquetta]

The branch of science concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic radiation.