Italian High Renaissance Painter and Inventor, 1452-1519 Italian High Renaissance Painter and Inventor, 1452-1519 Florentine Renaissance man, genius, artist in all media, architect, military engineer. Possibly the most brilliantly creative man in European history, he advertised himself, first of all, as a military engineer. In a famous letter dated about 1481 to Ludovico Sforza, of which a copy survives in the Codice Atlantico in Milan, Leonardo asks for employment in that capacity. He had plans for bridges, very light and strong, and plans for destroying those of the enemy. He knew how to cut off water to besieged fortifications, and how to construct bridges, mantlets, scaling ladders, and other instruments. He designed cannon, very convenient and easy of transport, designed to fire small stones, almost in the manner of hail??grape- or case-shot (see ammunition, artillery). He offered cannon of very beautiful and useful shapes, quite different from those in common use and, where it is not possible to employ cannon ?? catapults, mangonels and trabocchi and other engines of wonderful efficacy not in general use. And he said he made armoured cars, safe and unassailable, which will enter the serried ranks of the enemy with their artillery ?? and behind them the infantry will be able to follow quite unharmed, and without any opposition. He also offered to design ships which can resist the fire of all the heaviest cannon, and powder and smoke. The large number of surviving drawings and notes on military art show that Leonardo claims were not without foundation, although most date from after the Sforza letter. Most of the drawings, including giant crossbows (see bows), appear to be improvements on existing machines rather than new inventions. One exception is the drawing of a tank dating from 1485-8 now in the British Museum??a flattened cone, propelled from inside by crankshafts, firing guns. Another design in the British Museum, for a machine with scythes revolving in the horizontal plane, dismembering bodies as it goes, is gruesomely fanciful. Most of the other drawings are in the Codice Atlantico in Milan but some are in the Royal Libraries at Windsor and Turin, in Venice, or the Louvre and the École des Beaux Arts in Paris. Two ingenious machines for continuously firing arrows, machine-gun style, powered by a treadmill are shown in the Codice Atlantico. A number of other sketches of bridges, water pumps, and canals could be for military or civil purposes: dual use technology. Leonardo lived at a time when the first artillery fortifications were appearing and the Codice Atlantico contains sketches of ingenious fortifications combining bastions, round towers, and truncated cones. Models constructed from the drawings and photographed in Calvi works reveal forts which would have looked strikingly modern in the 19th century, and might even feature in science fiction films today. On 18 August 1502 Cesare Borgia appointed Leonardo as his Military Engineer General, although no known building by Leonardo exists. Leonardo was also fascinated by flight. Thirteen pages with drawings for man-powered aeroplanes survive and there is one design for a helicoidal helicopter. Leonardo later realized the inadequacy of the power a man could generate and turned his attention to aerofoils. Had his enormous abilities been concentrated on one thing, he might have invented the modern glider.   Related Paintings of LEONARDO da Vinci :. | Madonna with the Yarnwinder | The last dinner | Benois Madonna | Mona Lisa (detail) dhu | Head of a girl |
Related Artists:
Osborne, Walter
Irish, 1859-1903 Irish painter. The son of the animal painter William Osborne (1823-1901), he trained in the schools of the Royal Hibernian Academy (1876-81). In 1881 he won the Royal Dublin Society's Taylor scholarship and went to study at the Koninklijk Academie voor Schone Kunsten, Antwerp. Charles Verlat was the professor of painting, and Antwerp was then at the height of its popularity with students from the British Isles. In Antwerp and subsequently in Brittany, Osborne made contact with painters of the Newlyn school and other British naturalists. In Brittany he painted Apple Gathering, Quimperle (1883; Dublin, N.G.), a small greenish-grey picture of a girl in an orchard, which in subject and treatment shows the influence of Jules Bastien-Lepage. Throughout the 1880s Osborne worked in England, joining groups of artists in their search for the ideal naturalist motif. In the autumn of 1884 he was at North Littleton, near Evesham (Heref. & Worcs), where he painted Feeding Chickens in weather so cold that his model, a young peasant girl, nearly fainted. It is carefully drawn but painted with the square-brush technique characteristic of Bastien-Lepage's followers, and is very close to the contemporary work of George Clausen and Edward Stott (1855-1918). At Walberswick in Suffolk he painted October Morning (1885; London, Guildhall A.G.), a carefully studied plein-air work using bright dots of pure colour on a base of beige and grey. During this time Osborne gave careful attention to the showing of his work. He exhibited regularly at the Royal Hibernian Academy in Dublin from 1877 and at the Royal Academy in London from 1886.
john D.rockefeller
new york metropolian museum, cloisters collection
h. c. etcherry