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 :. | The Fotus in the Uterus | Mona Lisa (detail) r y | Study of the proportion of horses | Reverse side of the portrait of Ginevra de' Benci sg | Annunciation (detail) dfe |
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Francis Coates Jones
1857-1932
Johann Moritz Rugendas
Augsburg 1802-1858 Weilheim an der Teck,was a German painter, famous for his works depicting landscapes and ethnographic subjects in several countries in the Americas, in the first half of the 19th century. Rugendas was born to the seventh generation of a family of noted painters and engravers of Augsburg (he was a grandson of Georg Philipp Rugendas, 1666-1742, a celebrated painter of battles), and studied drawing and engraving with his father, Johann Lorenz Rugendas II (1775-1826). From 1815 to 1817 he studied with Albrecht Adam (1786-1862), and later in the Academy de Arts of Munich, with Lorenzo Quaglio II (1793-1869). Inspired by the artistic work of Thomas Ender (1793-1875) and the travel accounts in the tropics by Austrian naturalists Johann Baptist von Spix (1781-1826) and Carl von Martius (1794-1868), Rugendas arrived in Brazil in 1821, where he was soon hired as an illustrator for Baron von Langsdorff's scientific expedition to Minas Gerais and Sao Paulo. Langsdorff was the consul-general of the Russian Empire in Brazil and had a farm in the northern region of Rio de Janeiro, where Rugendas went to live with other members of the expedition. In this capacity, Rugendas visited the Serra da Mantiqueira and the historical towns of Barbacena, Sao Joao del Rei, Mariana, Ouro Preto, Caete, Sabara and Santa Luzia.
Joseph Heintz
1564-1609 Swiss Painter, draughtsman, architect and artistic adviser, son of Daniel Heintz. He began his training as a painter c. 1579 with Hans Bock I (c. 1550-c. 1623) in Basle. His first surviving drawings (1580) show something akin to Holbein manner in his stained-glass window designs. After completing his apprenticeship he went c. 1584 to Rome, where he studied the works of antiquity, and those of Raphael, Michelangelo, Polidoro da Caravaggio and others. In 1587 he went via Florence to Venice, absorbing the works of Tintoretto, Titian and Veronese. In autumn 1591 the Holy Roman Emperor Rudolf II summoned him as portraitist and court painter to Prague but soon sent him back to Italy, where he drew ancient statues in addition to producing his own work and acting as art agent for the Emperor. In 1592-5 he stayed mainly in Rome, then returned to Prague. In the following years he worked indefatigably as a draughtsman, painter, architect and artistic adviser, moving between Augsburg and Prague.