Machines - Gears * Levers * Pulleys * Engines (Oxlade Chris)(Pevná vazba)

The screw, the wedge, the lever, and the sloping ramp are the foundations of much more complicated machines. This book explains how they work, and how they have contributed to technological progress over thousands of years. It investigates all kinds of devices - from a pair of pliers, to cranes, wind turbines, and power drills - right down to the basics of how they
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