Subject:
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Re: technic motors as generators????
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 6 Oct 2000 07:38:19 GMT
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Viewed:
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1056 times
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> A metaphor that I like to use when describing the voltage / current
> relationship is rolling balls down a hill. Voltage describes how tall the
> hill is, and the current is how steep the hill is. The energy that the • ball
> has is dependent on both the height of the hill, and the grade of the • hill.
> It also makes it easy to describe why low voltage / high current can kill
> (ie jumping down a 5m cliff), but high voltage / low current wont (200m • tall
> hill, but gently sloping, so you can stroll down it.) This metaphor
> generally makes it easy for people to understand the idea.
Case in point: a Van de Graaf generator (those cool static electricity
machines) puts around a million volts through your body, but current is so
minimal all you get is the cool spikey hair effect. Whereas your house's
120 volts can kill you.
Paul Davidson
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Message is in Reply To:
 | | Re: technic motors as generators????
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| (...) flowing (...) each (...) true. (...) into (...) A metaphor that I like to use when describing the voltage / current relationship is rolling balls down a hill. Voltage describes how tall the hill is, and the current is how steep the hill is. (...) (24 years ago, 5-Oct-00, to lugnet.technic)
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