A stereoscopic daguerreotype of a display of chemicals and scientific equipment, taken by an unknown photographer in about 1852. In 1832, Sir Charles Wheatstone (1802-1875) first established the principles of stereoscopy. A stereograph is a pair of photographs which, when viewed through a stereoscope, give the appearance of three-dimensional depth. Stereoscopic photography became very popular in the 1850s and 1860s - a catalyst being the Great Exhibition of 1851.
© National Museum of Science & Media / Science & Society Picture Library