Item description for Working Things Out: Pulleys, turbines machines -- the science the models and YOU! (Crafty Inventions) (Crafty Inventions) by Steve Boulter Gerry Bailey...
What inspired the Romans to build straight roads? Why did Archimedes want to make a giant screw? More tricky problems lead to another 10 brilliant inventions in this title of the Crafty Inventions series. Discover how wind was used to power machines and how printing sped up book-making. Then string up a superpulley, build a wind turbine and carve a set of vegetable printing blocks Table of Contents: Archimedes screw Twisting force Arch bridge Redistributing loads Sundial Light and Shadow Chariot race Spoked wheels Crane Pulley systems Windmill Wind power Block printing Inks and dyes Wheelbarrow Classes of lever Road-building Camber and drainage Stirrup Stopping forces Glossary and index Tools and materials
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Est. Packaging Dimensions: Length: 11.1" Width: 8.4" Height: 0.5" Weight: 1.1 lbs.
Release Date Mar 1, 2005
Publisher Mercury Books
ISBN 1904668690 ISBN13 9781904668695