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Electricity is generally
invisible, inaudible, tasteless, and odorless. We normally have
no way of sensing its presence except with some kind of instrument.
This exhibit allows the visitor to experience the flow of electricity
directly as well as through the visual indication of a meter. We
hope that this experience tends to make one more appreciative of
indications one encounters on meters in this exhibit and elsewhere,
(in the exhibit builder's words, “Hey I know how that current
meter feels. Man, I been there!”) With this exhibit the visitor
turns a hand-cranked generator and receives a mild electric shock.
Since the person cranks the generator the shock received is only
as large as the visitor wishes. Two meters indicate voltage and
current. Visitors can plainly see that voltage can be present without
current and that small amounts of electricity won't kill them.
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