Silver bromide is a chemical compound with the formula AgBr. It is a light-sensitive material commonly used in photography and film. When exposed to light, silver bromide undergoes a chemical change, making it essential for capturing images on photographic plates and films. In addition to its use in photography, silver bromide has applications in medical imaging and water purification. Its ability to react with light makes it valuable in creating images, while its antimicrobial properties can help in treating infections and purifying water.