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 :. | Unfinished painting of St. Jerome in the Wilderness | Equestrian monument | Annunciation (detail) st | Interior view of the Schadels | Mona Lisa (detail) dhu |
Related Artists:
Ortega, Martin Rico y
Spanish, 1833-1908
Franz Wolf
Austrian b.1896
John Jackson
(31 May 1778 - 1 June 1831) was an English painter. Jackson was born in Lastingham, Yorkshire, and started his career as an apprentice tailor to his father, who opposed the artistic ambitions of his son. However, he enjoyed the support of Henry Phipps, 1st Earl of Mulgrave (1755-1831), who recommended him to the Earl of Carlisle, as well as that of Sir George Beaumont, 7th Baronet - who offered him residence at his own home and ₤50 per annum - and was able to attend the Royal Academy Schools, where he befriended David Wilkie and B. R. Haydon. At Castle Howard, residence of the Earl of Carlisle, he could study and copy from a large collection of paintings. His watercolours were judged to be of uncommon quality. By 1807 his reputation as a portrait painter was assured, and he made the transition to oils steadily, if not easily, regularly forwarding paintings to Somerset House. After a visit to the Netherlands and Flanders with Edmund Phipps in 1816, he accompanied Sir Francis Chantrey on a trip to Switzerland, Rome, Florence and Venice in 1819. In Rome he was elected to the Academy of St Luke. His portrait of Antonio Canova, painted on this trip, was regarded as being outstanding. Jackson was a prolific portraitist, strongly showing the influence of Sir Thomas Lawrence and Henry Raeburn in his work. His sitters included the Duke of Wellington, the explorer Sir John Franklin and some noted Wesleyan ministers. His 1823 portrait of Lady Dover, wife of George Agar-Ellis, 1st Baron Dover, was widely acclaimed. He was a Royal Academy student from 9 March 1805, was elected an Associate of the RA on 6 November 1815 and elected a full member on 10 Feb 1817. John Jackson was married twice - the first marriage was to the daughter of a jeweller, the second to Matilda the daughter of the painter James Ward. He died in St John's Wood, London.