Silver halide refers to a group of chemical compounds made up of silver and halogen elements, such as chlorine, bromine, or iodine. These compounds are commonly used in photography and imaging because they are sensitive to light. When exposed to light, silver halides undergo a chemical change that allows them to capture images. In traditional film photography, silver bromide is the most widely used silver halide. When developed, the exposed silver halide crystals form a visible image. This property makes silver halides essential in creating photographic films and papers, as well as in some digital imaging processes.