Nuts and Bolts

Shard engineer Roma Agrawal deconstructs our most complex inventions into seven fundamental objects: the nail, spring, wheel, lens, magnet, string and pump.
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''Delightful'' TIM HARFORD, FINANCIAL TIMES
''Appeals to the nerdy side of just about all of us... a great book to give'' JANE GARVEY
''Splendid. Clearly written, elegantly structured full of facts you are unlikely to chance on anywh...