Engraving from 'Ars Magna Lucis Et Umbrae', published in 1646 by Athanasius Kircher (1602-1680). The plate shows a large camera obscura inside which is a bright oil lamp and a lens. The lens is set up to project onto the wall of the room a series of images on glas set into a large slide. A chimney is also set into the top of the camera obscura to let out the smoke from the lamp. These demonstrations eventually resulted in the birth of the magic lantern.
© Science Museum / Science & Society Picture Library