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 :. | Last Supper | The Virgin and Child with St Anne | Anatomical drawing of the stomach and the intestine | Hi Hieronymus | The Annunciation |
Related Artists:
Sergei Vinogradov
Russian.1869-1938
Albertus Pictor
c.1440-1509,English also called Albert Pictor, Albert Målare and Albrekt Pärlstickare (Swedish), is the most famous late medieval Swedish painter, known for his wallpaintings surviving in numerous churches in southern and central Sweden. Albertus was originally called Albertus Immenhusen, after the German town in Hessen of which he was a native. He occurs in Swedish historical sources from 1465, when he was admitted a burgher of Arboga. Eight years later he moved to Stockholm, where, in accordance with current practice, he took over the workshop as well as the widow of a deceased painter. He was a versatile and prolific artist, known to his contemporaries not only for his church wallpaintings, but also as an organist and embroiderer (hence his nickname of Parlstickare, Pearl-embroiderer). More than thirty of his schemes, mostly in a secco technique, are extant, many in the Lake Malaren region, about a third of which bear his signature. Notable examples include wallpaintings at Bromma kyrka, near Stockholm, Lid kyrka, in Sodermanland and Taby Kyrkby kyrka in Taby. Part of his life and work are depicted in the illustrated book, Albert malare och sommaren i Harkeberga (Albert the Painter and the summer in Harkeberga), which describes his painting of the small church of Harkeberga in Uppland (see below).
William Ellery Channing
(April 7, 1780 - October 2, 1842) was the foremost Unitarian preacher in the United States in the early nineteenth century and, along with Andrews Norton, one of Unitarianism's leading theologians. He was known for his articulate and impassioned sermons and public speeches, and as a prominent thinker in the liberal theology of the day.