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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. The visitor can
plainly see that voltage can be present without current
by cranking the generator and help people see that small
amounts of electricity won't kill them."
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