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Science World article articoli per didattica negozio didattica globi globe mappamondi mappamondo scanglobe modellismo globi collezionismo globi articoli per la scienza regali scienza articoli regalo scienza modellismo scienza microscopi telescopi punto vendita articoli scienza point sell science shop science revell apollo plastic kit modellismo scienza bandai zvezda punto vendita italeri plastic model science hobby model shuttle hobby model globes
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15,00 €Each set contains 6 bottles of Italeri Acrylic Paints (20ml each) Per saperne di più -
18,00 €The catapult was a medieval weapon which Leonardo reworked and improved upon. As shown in the drawings on page 140a/br of the Atlantic Code, which represent six designs of a spoonshaped catapult, the loading mechanism is activated by two large flexible wooden arms that increase launching power. The stone or metal projectile is placed in the spoon-shaped end of a long lever. The loading operation turns the large central pin and flexes the curved wooden arm. The safety catch is then released to launch the projectile straight at the target. The launching power is proportional to the length of the lever arm and so the energy involved in throwing the projectile is high, allowing the projectile to cover particularly long distances. Per saperne di più -
7,00 €Flat Round Stain Steel Tweezers 120 MM Per saperne di più -
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22,00 €On page 945/r/ of the Codex Atlanticus, Leonardo da Vinci drew many devices for the plan of a mechanical paddle boat. One or more sailors can alternate working the pedals. The pedals transfer the alternate motion to a central gear, where it becomes linear motion, and a series of gears transfer it to the two big paddles on the sides of the craft. The central gear is drawn in more accurately on another page, 30/v/, and the mechanism works through springs hidden in the two main wheels that alternate. Per saperne di più -
18,00 €The ornithopter is a machine designed to fly by the flapping of its wings in imitation of birds.In 1485, Leonardo da Vinci began to study the flight of birds. He grasped that humans are too heavy, and not strong enough, to fly using wings simply attached to the arms. Therefore he sketched a device in which the aviator lies down on a plank and works two large, membranous wings using hand levers, foot pedals, and a system of pulleys. Per saperne di più -
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22,00 €PRM booklet not included from september 2013 This model represents one of Leonardo da Vinci's most intriguing designs. It has been known as "Leonardo's Automobile" but recent studies consider it one of the first robots in history. The machine is drawn on folio 812/r/ of the Codex Atlanticus together with other devices. The robot's engine is hidden internally: a spring held fast by a stopping mechanism trasmits motion to the gears that move the wheels on the sides. Per saperne di più -
