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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: $10.20
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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: $10.13
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Microsoft Excel 2000 Step by Step (Step By Step (Microsoft))
Spreadsheets aren't just for financial planners anymore If you want to master the secrets of one of the most powerful spreadsheet applications on the market, take a peek inside Microsoft Excel 2000 Step by Step. You'll find 19 self-paced lessons on everything from navigating workbooks to automating your work; novices will quickly get up to speed, while more advanced users can jump right in to the new features offered by the 2000 version. The numbered instructions are clear and linked to sharp illustrations, making the translation from book to machine a snap. While it's certainly not the most comprehensive book on Excel 2000 (there's little programming information, and you don't get every last detail on most features), it's not meant as a reference and it serves its educational purposes handily. The enclosed CD-ROM provides all the sample files you'll need to work through the hands-on lessons. You'll also find multimedia walk-through files that demonstrate some of the more complex procedures. If Excel 2000 is or will be a part of your life, do yourself a favor and get Microsoft Excel 2000 Step by Step--Rob Lightner.
Price: $8.06
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Adventures from the Technology Underground: Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the Garage Warriors Who Love Them
Editorial Reviews| Verdana sans-serif class=small color=FFFFF>The Age of Invention is Still Alive: Catapults, Air Cannons, and Skycars |
Punkin' Chunk Catapult | 
Taser Air Cannon | 
Skycar |
Watch Adventures from the Technology Underground Slideshow (requires Flash).
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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: $12.21
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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: $9.65
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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: $10.20
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Microsoft Access 2000 Step by Step
These days, information is the key to success in any endeavor, and powerful database systems make managing and storing data easier. Microsoft Office comes with Access, a powerful database application that makes your information manageable and comprehensible. Microsoft Access 2000 Step by Step will get you started on the road to database mastery. Clear instructions, plentiful screenshots, and a CD-ROM full of practice files and multimedia demos of complex maneuvers make this book useful to novices while getting the expert up to speed on the new tools available in the 2000 edition. Though it's not comprehensive--programming for Access and all but the most rudimentary database creation instructions are excluded--it discusses the essential tasks users will need to accomplish. The 12 lessons cover topics ranging from the basics of forms to advanced data presentation. Each lesson gives a time commitment estimate, learning points, and a reference/review at the end for more efficient instruction. After you've worked through the book, it's simple to return and find exactly the help you need when you're elbow-deep in data and suddenly forget your next step. While it's no reference guide, Microsoft Access 2000 Step by Step will have you running Access like a pro in no time. --Rob Lightner.
Price: $0.37
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History: Fiction or Science? (Chronology, No. 1)
Recorded history is a finely-woven magic fabric of intricate lies about events predating the sixteenth century. There is not a single piece of evidence that can be reliably and independently traced back earlier than the eleventh century. This book details events that are substantiated by hard facts and logic, and validated by new astronomical research and statistical analysis of ancient sources. .
Price: $25.16
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