Spin

<p> Everywhere things spin--wheels turn motors hum tornadoes roar. This book explains the history and basic physics of spinning objects from yo-yos drills propellers and washing machines to ballet dancers dust devils and bacteria.</p><p> The book gives instructive entertaining accounts of everyday sights: Does a curve ball really curve? Why do figure skaters tuck in their arms? Can you make a disposable pen fly? How does a falling cat always land on its feet? Answers to these questions (and many others) tell the amazing story of things that spin.</p>