Atomic Emission Spectroscopy is an analytical technique used to identify and quantify elements in a sample. It works by exciting atoms in a sample, causing them to emit light at characteristic wavelengths. By measuring this emitted light, scientists can determine the presence and concentration of specific elements. The process typically involves heating the sample to high temperatures, often using a flame or plasma, which provides the energy needed for excitation. The emitted light is then analyzed using a spectrometer, allowing for precise identification of elements based on their unique emission spectra.