Leonardo Da Vinci
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 :. | Portrait of a Musician | Saint John the Baptist | The Virgin and Child with Anne (mk05) | Reverse side of the portrait of Ginevra de' Benci | Bacchus (mk05) | Related Artists: Eduardo de Martinopainted Combate naval in 1838 - 1912 John MacWhirter (27 March 1839 Slateford, Water of Leith - 28 January 1911 London) was a Scottish landscape painter.
John was the third of four children. He attended a school in Colinton, and after his father's death was apprenticed to Oliver & Boyd, booksellers in Edinburgh. He stayed there for only a few months and then in 1851 enrolled at the Trustees Academy under Robert Scott Lauder and John Ballantyne (1815-97). He spent long periods sketching and studying nature outdoors. His first painting to be exhibited at the Royal Scottish Academy at age 14, was 'Old Cottage at Braid'. In 1880, he was made an Honorary Member of the Royal Scottish Academy. Exploring and painting abroad he visited Italy, Sicily, Switzerland, Austria, Turkey, Norway and the U.S.A. - the Alps being a great inspiration. He moved to London in 1867 and on 4 May 1893 was elected a Royal Academician.
MacWhirter specialised in romantic landscapes with a great fondness for trees, spending much time in the hilly countryside of Perthshire. Initially, under the influence of John Everett Millais, he experimented with the detailed images of the Pre-Raphaelites, but later adopted a more sweeping style. With John Pettie he illustrated The Postman's Bag (Strahan, 1862), and Wordsworth's Poetry for the Young (Strahan, 1863). John Augustus AtkinsonEnglish Painter, 1775-ca.1833
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