Benjamin Franklin became interested in electricity in the
mid-1740's, when very little was known about the topic. He spent the better
part of a decade conducting various electrical experiments. He coined a number
of electrical terms we use today, including battery, conductor and electrician. Franklin is also
credited with the invention of the lightning rod, which is used to protect
buildings and ships from lightning strikes. As the story goes, on the tenth of June 1752,
Benjamin Franklin and his son William flew a kite from a spire atop Christ
Church in Philadelphia during a thunderstorm. The kite was not struck by visible
lightning, but a charge was collected in a Leyden jar (essentially a very early
form of capacitor), enabling Franklin to demonstrate that lightning was
electrical.
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