Chemiluminescence is the process by which light is produced as a result of a chemical reaction. This phenomenon occurs in various natural and artificial contexts, such as in certain types of fireflies and glow sticks. In these cases, specific chemicals react to release energy in the form of light, often without producing significant heat. The light emitted through chemiluminescence can be used in various applications, including bioluminescent assays in laboratories and emergency lighting systems. This property makes it valuable for scientific research and practical uses, as it allows for illumination without the need for electricity or traditional light sources.