The camera obscura is the historical precursor to the modern camera. In its simplest form, it consisted of a darkened room or box with a small hole in one wall, allowing light rays to pass through and project an inverted image of the outside scene onto a surface inside. First described by Aristotle in the 4th century B.C., the camera obscura was refined over the centuries and widely used as an aid for drawing, artistic studies, and scientific observation. This principle laid the foundation for photographic development and modern imaging technologies.