An infrared spectrometer is a scientific instrument used to analyze the composition of materials by measuring how they absorb infrared light. When a sample is exposed to infrared radiation, different chemical bonds within the material absorb specific wavelengths of light, creating a unique absorption pattern. This pattern, known as an infrared spectrum, helps identify the molecular structure and functional groups present in the sample. Infrared spectrometers are widely used in various fields, including chemistry, biology, and environmental science. They can analyze solids, liquids, and gases, making them valuable for applications such as identifying unknown substances, monitoring air quality, and studying biological samples.