A photogram is a photographic image made without a camera, created by placing objects directly onto light-sensitive paper and exposing it to light. The areas where objects block the light remain white, while the exposed areas turn dark, resulting in a silhouette effect. This technique allows for creative expression and experimentation with shapes and textures. Photograms have been used by various artists, including Man Ray and Laszlo Moholy-Nagy, to explore the interplay of light and shadow. They are often associated with the Dada and Surrealist movements, emphasizing the artistic process over traditional photography methods.