The UK Ural Riders Association has some of the best tech explanations of any site I’ve seen. I was just laughing my head off at Electrickery…a beginners guide, in which the author explains electricity as something that happens when, “a great number of very annoyed, but invisible, Gremlins, gallop around your wiring, lighting your lights and spinning your starter motors. These fellows are so tiny that, even if we could see them, we could not count them. Apparently you can have six million, million, million Gremlins galloping through your bit of wire in a second…Luckily some earlier mortals developed meters that can measure this great dollop of Gremlins as they hurtle by. This dollop is called an Amp, hence the Ammeter (or Amp-meter).”
Visit this page and learn about Wiring and Switches (a tube down which the Gremlins flow), the Alternator (where the gremlins go for a snooze when the engine is not running), and the Battery (a sort of prison where we trap some of the pressurised little buggers).
