Precise line drawings and complete instructions show you how to amaze your friends with 'impossible' card tricks, by 'growing' a new finger or by bending a spoon without denting it! Grade 5-10
In Springs, a visiting inventor observes a family harvesting coconuts on Mammoth Island, using a number of devices called springs. Springs come in two shapes: There are coil springs, and there are bending bars -- called "leaf springs"-- which is what the islanders use to improve their coconut collecting. When a spring is bent, the molecules on one side are pushed together while the molecules on the other side are pulled apart. So once the bending force is removed, the molecules rapidly "spring" back into their natural places. Springs store potential energy when they are stretched or compressed.
Added by: Maria | Karma: 3098.81 | Non-Fiction, Maths | 18 April 2008
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This is a colorful tour through the intriguing world of mathematics.
Take a grand tour of the best of modern math, its most elegant solutions, most clever discoveries, most mind bending propositions, and most impressive personalities.
