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 |  |  Making & Enjoying Telescopes: 6 Complete Projects & A Stargazer's Guide"...follows a logical path through topics of safety, construction, sky coordinates, and, finally, design....Plans for each telescope are illustrated with both line drawings and photographs...procedures are laid out in an easy-to-follow technique...includes a rich gallery of illustrated telescopes that amateurs have built...a welcome addition... |  |  Machines That Become Us: The Social Context of Personal Communication TechnologyThe quaint Midwestern town I grew up in seemed to have been plunked down, whole and immutable, in the middle of a vast farmland quilt. From its compact downtown, a vista of unbroken cornfields stretched in every direction, sealed hermetically at the distant horizon by a brilliant azure bowl of a sky. Throughout the summer, the prairie winds hissed... |
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 The Tunguska Fireball: Solving One of the Great Mysteries of the 20th CenturyOn 30th June 1908 a mysterious fireball exploded in the Siberian sky and flattened 2000 square kilometres of the remote Tunguska forest. As no crater and no material from outer space were ever found, a meteorite could not have caused this explosion. so what did? This book discusses all theories and then analyses the evidence.
The... |  |  |  |  Aspects of Explosives DetectionDetection and quantification of trace chemicals is a major thrust of analytical chemistry. In recent years much effort has been spent developing detection systems for priority pollutants. Less mature are the detections of substances of interest to law enforcement and security personnel:in particular explosives. This volume will discuss the... |
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