Find Out About Machines - Chris Oxlade

Discover what machines are, how they work, and how they have developed through history, in this fascinating fact file and learn-it-yourself project book. You can find out about levers, pulleys, wheels and axles, gears, hydraulics, wind power and much more. It includes 19 practical experiments - make a windmill, a hydraulic lifter and even a vacuum cleaner! Over 260 images include step-by-step photographs and explanatory illustrations. It is an accessible and lively introduction to machines, ideal... Zobrazit více