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 important information about the material being studied, such as its composition, temperature, and other physical properties. Optical spectrometers are widely used in various fields, including chemistry, astronomy, and environmental science. They can help identify substances in a sample, study celestial bodies, or monitor pollutants in the atmosphere. By providing detailed spectral data, these instruments play a crucial role in advancing scientific research and applications.