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Turn a simple toy motor into a generator that converts hand motion into electrical energy and powers a light bulb. No battery, no pollution, just amazement. The generator could be used as an awesome emergency torch. Caution: High voltage inspiration! Contains plastic casing, LED light bulb, toy motor, gears, and detailed instructions.
Your children will have fun while learning with this 4M Glow Human Skeleton Kit. It comes complete with magnets that light up in the dark. They will learn how it supports the body. This 4M science kit includes "magic" x-ray films that let you "see through" to the insides and paint the bones. It makes a thoughtful gift idea for a birthday, holiday or other special occasion.
Can you tell what time it is without a watch or a cell phone? Sure you can! Sundials have been telling time for thousands of years. Now you can build a watch-style sundial with this kit from Koontz. Using the same principles as obelisks and shadow clocks, sundials can be aligned to be parallel to the Earth's axis of rotation and use your own geographical latitude and the sun's position to tell time. A gnomon in the center of the sundial creates a shadow that lines up with the current time. So shadows are good for something besides spooking you in the middle of the night and shading you during hide and seek! These shadows actually show you what the solar time is! The sundial watch is assembled from 23 cardboard pieces with a working compass on the watch face. Use the compass and follow the instructions to orient yourself so you always know what time it is. No batteries necessary!
Construct this cool metal detecting robot. You can remote control it to search for metallic objects on the ground. The metal detecting unit can be detached from the robot body. It is a cool gadget which will fascinate all your friends. You will also learn the principles behind this cute robot to find out how metal detector works. Contains 1 chassis (with axle and gear installed), 1 motor with wires and worm gear, 1 motor cover, 1 metal detector, 1 base plate for eyes, 2 stick-on eyes, 1 switch lever, 1 gear, 1 axle,1 short axle, 1 remote-control with switch and wires, 1 battery cover, 4 terminal caps, screws, washered screw, 1 connecting cable, 4 wheels and detailed instructions. It is 14cm long when built.
New elements to combine, new creations to make. With Geomag Mechanics 86 mechanics gets bigger and more dynamic.
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 spoon-shaped 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.
Sheets 90/v and 91/r of the Madrid Code include drawings of strange mechanisms that are not linked to the treatise on mechanics and often have no explanatory text. Analysing them led to the reconstruction of mechanisms enabling a mysterious animal, a mechanical lion, to move robotically. The lion, a gift from Pope Leone X and the town of Florence, was taken to Lyon, in France; on July 12 1515, at the end of a surprising, magical walk before the King of France, Francis I, it stopped knocking some lilies over. It can be considered one of the first animal-like robots ever built.
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
Build a solid volcano and use it to perform a stunning volcanic eruption on your table top! Excavate to unearth beautiful crystals which are formed after the volcano erupts. Collect these natural treasures! Experience the unlimited fun of geological science! Kit includes volcano mold, fine quality plaster mix, paint strip of six colors, paint brush, stirrer, plaster block with crystals and fool's gold pyrites buried inside, a specially designed digging tool, brush, magnifier, display sets with cover and base card, pouch bag, a sheet of fun graphics for decoration and instructions.
Construct a Cartesian diver using a dropper, copper, washers and a hook. Place it inside a water-filled bottle and learn how changing pressure can cause the diver to sink or float. Contains dropper, 3 coppers, plastic weights and hooks and sticker.
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