If you're a budding spy, what better way to conceal your clandestine activities than to miniaturize your secret agent arsenal? MiniWeapons of Mass Destruction 2 provides fully illustrated step-by-step instructions for building 30 different spy weapons and surveillance tools, including:

* Paper Dart Watch                

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In this revised and expanded edition, William Gurstelle shows ordinary folks how to build a dozen fun and impressively powerful launchers with inexpensive household and hardware store materials. This new edition includes three new projects along with diagrams, photographs, and fascinating science information. With a strong emphasis on safety, the book also gives tips on troubleshooting and describes each machine's historical origins as well as the...

Written for reasonable risk takers and suburban dads who want to add more excitement to their lives, this daring combination of science, history, and DIY projects explains why danger is good for you and details the art of living dangerously. All of the projectsfrom throwing knives, drinking absinthe, and eating fugu to cracking a bull whip, learning baritsu, and building a flamethrowerhave short learning curves; are human-focused, as opposed to technology-centric;...

Combining science, history, and DIY pyrotechnics, this book for the workbench warrior explains humankinds most useful and paradoxical tool: fire. William Gurstelle, author of the bestselling Backyard Ballistics, presents 25 projects with instructions, diagrams, photos, and links to video demonstrations that enable people of all ages to explore and safely play with fire. From Franklins stove to Diesels engine, explosive and fascinating tales are told...

En este libro se exponen con gran detalle diez experimentos que supusieron un cambio radical en las teorías físicas y científicas, partiendo de lo ocurrido a finales del siglo XIX y finalizando a finales del siglo XX.Estos experimentos se describen primero centrándose en el problema que provocó la prueba de ese mismo aparato experimental, luego describiendo la solución encontrada y finalmente exponiendo las consecuencias.

A man's home is his castle, or so the saying goes, but could it withstand an attack by Attila and the Huns, Ragnar and the Vikings, Alexander and the Greeks, Genghis Khan and the Mongols, or Tamerlane and the Tartars? Backyard Ballistics author William Gurstelle poses this fascinating question to modern-day garage warriors and shows them how to build an arsenal of ancient artillery and fortifications aimed at withstanding these invading hordes. Each...

Más allá de opiniones y teorías, el experimento es el que nos da la clave sobre qué es cierto y qué no. Una vez más, con su estilo riguroso y divertido, Javier Fernández Panadero te propone con este libro un desafío: TÚ serás el que llegue al resultado. ¿Cuánto peso aguanta un pelo? ¿Cambia mi altura durante el día? ¿Cómo sacar ventaja en un examen tipo test? Mide, calcula, estima, comprueba y decide. Esta es la varita mágica con...

Science, as we all know refers to a body of knowledge itself, of the type that can be rationally explained and reliably applied. Science is a unique combination of Theory and Practice. A thorough knowledge of this subject is almost impossible without proper practical demonstrations which are also termed as Scientific Activities or Projects. In this book, 71+10 Science Activities, the author has taken up the simple facts and principles of Science,...

This indispensable handbook that gives you detailed instructions on how to perform 50 science experiments to explore the properties of the elements. You'll learn how to conjure up a genie from a bottle (Mn, Manganese), shoot flames from a cornstarch-powered torch (O, Oxygen), cook up ghastly green eggs (S, Sulfur), and much more. The Electric Pickle is also sprinkled with mind-bending scientific facts and entertaining sidebars about historic experiments...