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The Art of the Catapult: Build Greek Ballistae, Roman Onagers, English Trebuchets, and More Ancient Artillery
Whether playing at defending their own castle or simply chucking pumpkins over a fence, wannabe marauders and tinkerers will become fast acquainted with Ludgar, the War Wolf, Ill Neighbor, Cabulus, and the Wild Donkey—ancient artillery devices known commonly as catapults. Building these simple yet sophisticated machines introduces fundamentals of math and physics using levers, force, torsion, tension, and traction. Instructions and diagrams illustrate how to build seven authentic working model catapults, including an early Greek ballista, a Roman onager, and the apex of catapult technology, the English trebuchet. Additional projects include learning how to lash and make rope and how to construct and use a hand sling and a staff sling. The colorful history of siege warfare is explored through the stories of Alexander the Great and his battle of Tyre; Saladin, Richard the Lionheart, and the Third Crusade; pirate-turned-soldier John Crabbe and his ship-mounted catapults; and Edward I of England and his battle against the Scots at Stirling Castle. .
Price: $9.99
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Whoosh Boom Splat: The Garage Warrior's Guide to Building Projectile Shooters
These are the homemade machines that you’ve dreamed of building, from the high-voltage Night Lighter 36 spud gun to the Jam Jar Jet, the Marshmallow Shooter, and the Yagua Blowgun Including detailed diagrams and supply lists, Gurstelle’s simple, step-by-step instructions help workshop warriors at any skill level achieve impressively powerful results. With Whoosh Boom Splat, you can build: - The Jam Jar Jet—the simple pulse jet engine that roars - The Elastic Zip Cannon—a membrane-powered shooter that packs a wallop - The Mechanical Toe—a bungee-powered kicking machine - The Vortex Launcher—a projectile shooter that uses air bullets for ammunition - The Clothespin Snap Shooter—the PG-17 version of a clothespin gun that fires fiery projectiles - The Architronito—the steam-powered cannon conceived by Leonardo da Vinci And many more! In addition to learning how to make these cool gadgets, you’ll find sections packed with information on what makes each machine unique. Gurstelle describes the machine’s historical origins as only he can: with verve, fun, and the sort of quirky details his legions of fans love. Whoosh Boom Splat is a must-have for every extreme tinkerer..
Price: $9.56
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Stomp Rockets, Catapults, and Kaleidoscopes: 30+ Amazing Science Projects You Can Build for Less than $1
Kids will learn how things they encounter every day operate by building their own models with this hands-on activity book. Projects include building a working model of the human hand’s muscles, bones, and tendons using drinking straws, tape, and string; using a pair of two-liter bottles and a length of rubber tubing to learn how a toilet flushes; and discovering how musical instruments make sounds by fashioning a harmonica, saxophone, drum, flute, or oboe. All devices are designed to use recycled or nearly free materials and common tools. Kids are encouraged to modify and improve the designs, or create an entirely new device using the concepts explored. Each project includes materials and tools lists, step-by-step instructions with photographs, a summary of the science concept demonstrated, and follow-up questions to gauge student understanding for use in the classroom. .
Price: $9.99
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Microsoft Excel 2000 Step by Step (Step By Step (Microsoft))
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Microsoft Office 2000 8-in-1 Step by Step (Step By Step (Microsoft))
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Cats' Paws and Catapults: Mechanical Worlds of Nature and People
"Life is what biology's all about. Technology is something else altogether Or so I believed before I got into a kind of biology that's about technology as well as life," begins biomechanics expert Steven Vogel in the preface to Cats' Paws and Catapults. Vogel examines the "mechanical worlds of nature and people" in such chapters as "The Stiff and the Soft" and "The Matter of Magnitude." Lots of line-drawing illustrations help readers understand the examples used to answer questions of animal and machine efficiency, design and repair. Vogel clearly loves the puzzles of biology--why, for instance, do daffodil stems bend at only one precise spot? This book is filled with intriguing answers to such hidden questions, and curious readers will eagerly dive into Vogel's investigations of whether nature or human design is superior and why the two technologies have diverged so much. --Therese Littleton.
Price: $9.50
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The Crossbow: Its Military and Sporting History, Construction and Use
This unique exploration of a weapon used for centuries will fascinate historians and enthusiasts alike. The crossbow, probably introduced to England by the Norman invaders in 1066, was once considered so barbarous that it was prohibited as a “weapon hateful to God and unfit for Christians.” Sir Ralph Payne-Gallwey, an accomplished engineer, here describes military and sporting crossbows and their dimensions, components, and ranges; provides hard-to-find information on crossbow construction; gives details about modern crossbows such as bullet-shooting crossbows and bolt-shooting crossbows; and peeks at unusual crossbows like the Chinese repeating crossbow. Comprehensively illustrated with original drawings and selections from historical manuscripts, this is a necessary reference book for anyone who hunts with a crossbow or collects or studies weapons of the past. .
Price: $5.94
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The Practical Guide to Man-Powered Weapons and Ammunition: Experiments with Catapults, Musketballs, Stonebows, Blowpipes, Big Airguns, and Bulletbows (Practical Guide)
David slew Goliath with his slingshot: for millennia that was the norm, as men used a variety of non-explosive weapons to fire small stones and carefully rounded bullets of clay, glass, and even steel and lead. This unusual study explores in practical detail the many ways, old and new, in which man shot projectiles without recourse to gunpowder. They include the bow and arrow, a favorite for the last 10,000 years; pump-up air guns; blowpipes; catapults; and homemade lead musketballs. There’s information on ammunition and velocity, as well as a lively personal narrative filled with humor and the spirit of experimentation. .
Price: $9.42
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