Infrared spectrometry is an analytical technique used to identify and study materials based on their interaction with infrared light. When a sample is exposed to infrared radiation, it absorbs specific wavelengths corresponding to the vibrations of its molecular bonds. This absorption creates a unique spectrum that acts like a fingerprint for the substance, allowing scientists to determine its composition and structure. The technique is widely used in various fields, including chemistry, biochemistry, and environmental science. It can analyze solids, liquids, and gases, making it versatile for applications such as quality control, material identification, and monitoring chemical reactions.