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 :. | Profile of an old man | The madonna with the Children | Mona Lisa (mk45) | St John in the Wilderness | Annunciation (detail) fg47 |
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Marianne Loir
French Painter, ca.1715-1769
Adriaen van der Spelt
Adriaen van der Spelt (ca. 1630, Leiden - 1673, Gouda), was a Dutch Golden Age flower painter. According to Houbraken, whose comments were based on the Gouda stories by Ignatius Walvis, he was an excellent flower painter born in Leiden, but his parentage was from Gouda. He spent many years at the court of Brandenburg working for Frederick William I, Elector of Brandenburg, but moved to Gouda to marry a third time with a nasty wife from Groningen who drove him to his grave. According to the RKD he was a flower painter who spent the years 1664-1670 at the court of Brandenburg.
Theo van Doesburg
Dutch 1883-1931 Dutch painter, architect, designer and writer. He was officially registered as the son of Wilhelm Kepper and Henrietta Catharina Margadant, but he was so convinced that his mother second husband, Theodorus Doesburg, was his father that he took his name. Little is known of his early life, but he began painting naturalistic subjects c. 1899. In 1903 he began his military service, and around the same time he met his first wife, Agnita Feis, a Theosophist and poet. Between about 1908 and 1910, much influenced by the work of Honor Daumier, he produced caricatures, some of which were later published in his first book De maskers af! (1916). Also during this period he painted some Impressionist-inspired landscapes and portraits in the manner of George Hendrik Breitner. Between 1914 and 1915 the influence of Kandinsky became clear in such drawings as Streetmusic I and Streetmusic II (The Hague, Rijksdienst Beeld. Kst) and other abstract works.