Ah, the Porsche 911, the rear-engined wonder from Zuffenhausen, Germany. Everybody that knows anything about cars is keenly ...

Bicycle generator technology has advanced far beyond ... ruling out the usually coin-cell power sources. His bike’s hub dynamo offered interesting possibilities — not only does it provide ...

Cars use a type of a.c. generator, called an alternator, to keep the battery charged and to run the electrical system while the engine is working. A dynamo is another type of generator sometimes ...