An optical spectrometer is a scientific instrument used to measure the properties of light across different wavelengths. It works by dispersing light into its component colors, allowing scientists to analyze the spectrum. This analysis can reveal information about the composition, structure, and physical properties of materials. Optical spectrometers are commonly used in various fields, including chemistry, physics, and astronomy. They help researchers study phenomena such as chemical reactions, stellar compositions, and material characteristics. By examining the light emitted or absorbed by substances, scientists can gain insights into their molecular and atomic structures.