A Moment of Science

Posts tagged wheel

September 27, 2003

 

Changing Gears

In our high-tech world it’s easy to forget the simpler things. Take a bicycle, for instance. No engine, no computerized braking system, no fancy fuel injection: all you need is air in the tires and off you go. Simple, that is, until you take a closer look at bicycles with multiple speeds. How do all [...]

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