Stereoscopic photography is a technique that creates the illusion of depth in images by presenting two slightly different perspectives of the same scene. This method mimics how human eyes perceive depth, as each eye sees a slightly different view. When these two images are viewed together, the brain combines them to create a three-dimensional effect. To view stereoscopic images, special equipment like stereoscopes or 3D glasses is often used. The images can be captured using a dual-lens camera or by taking two separate photos from different angles. This technique has been popular since the 19th century and is still used in various applications today.