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 :. | Lorenzo de Medici between Antonio Pucci and Francesco Sassetti, with Giulio de Medici, fresco by Ghirlandaio | Ceiling decoration yy | Muscle structure of the thigh | Lady with the ermine | virgin and child with st.anne |
Related Artists:
Brodero Mathisen
artist in 16th centry.
Sir Francis Drake
1540-1596,English admiral, the most renowned seaman of the Elizabethan Age. Brought up by his wealthy Hawkins relatives (see John Hawkins) in Plymouth, Drake went to sea at about age 18. He gained a reputation as an outstanding navigator and became wealthy by raiding and plundering Spanish colonies. In 1577 he set sail with five ships, but ultimately only his flagship, the Golden Hind, made its way through the Strait of Magellan into the Pacific and up the coast of South and North America. He sailed at least as far north as what is now San Francisco, claiming the area for Elizabeth, and continued westward to the Philippines and around the Cape of Good Hope. Having circumnavigated the globe, he returned to Plymouth, Eng., in 1580 laden with treasure, the first captain ever to sail his own ship around the world. In 1581 he was knighted. Appointed vice admiral (1588), he destroyed ships and supplies destined for the Spanish Armada and delayed the Spanish attack for a year. But he is not known to have played any part in the battle that eventually occurred. In his lifetime, his reputation at home was equivocal, yet his legend grew. On his last voyage he succumbed to fever and was buried at sea.
henry mayhew
English journalist and sociologist. He studied law but soon turned to journalism. In 1841 he founded the highly successful Punch. A vivid and voluminous writer, he is best known for London Labour and the London Poor (1851 C 62), an evocation of the sights and sounds of the working-class districts of London, which influenced Charles Dickens and other writers. He also wrote plays, farces, fairy tales, and novels, some in collaboration with his brother Augustus Septimus Mayhew