…(1452–1519), Italian painter, scientist, and engineer. His paintings are notable for their use of the technique of sfumato and include The Virgin of the Rocks (1483–85), The Last Supper (1498), and the Mona Lisa (1504–05). He devoted himself to a wide range of other subjects, from anatomy and biology to mechanics and hydraulics: his 19 notebooks include studies of the human circulatory system and plans for a type of aircraft and a submarine…
