Spectroscopic analysis is a technique used to determine what a substance is made of and in what proportions by examining how it interacts with electromagnetic radiation.

When light or another form of energy strikes a material, its atoms and molecules absorb or emit energy at specific wavelengths, creating a unique spectrum that reveals its composition. By studying these spectra, scientists can identify elements, compounds, and their concentrations in a sample.

This method is widely applied in chemistry, physics, biology, geology, and industrial research to ensure quality control and understand material structures. In essence, spectroscopy allows us to explore the nature of matter by observing how it responds to light.