A photo, short for photograph, is an image created by capturing light on a light-sensitive surface, such as film or a digital sensor. This process can be done using a camera, which focuses light to create a visual representation of a scene, object, or person. Photos can be in color or black and white and are often used to document moments, convey emotions, or share experiences. Photos are widely used in various fields, including journalism, art, and science. They can be printed on paper or displayed digitally on devices like computers and smartphones. The invention of photography has significantly impacted how we communicate and preserve memories, making it an essential part of modern life.