A lightning rod is a rounded copper rod mounted on top of a building and welded to a heavy copper cable running down into the ground. Lightning rods are used to protect houses and barns from lightning; the lightning current runs through the copper rather than through the building. Why? Why should the end of the rod be rounded?
A lightning rod is a rounded copper rod mounted on top of a building and welded to a heavy copper cable running down into the ground. Lightning rods are used to protect houses and barns from lightning; the lightning current runs through the copper rather than through the building. Why? Why should the end of the rod be rounded?
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A lightning rod is a rounded copper rod mounted on top of
a building and welded to a heavy copper cable running down into the
ground. Lightning rods are used to protect houses and barns from lightning;
the lightning current runs through the copper rather than through
the building. Why? Why should the end of the rod be rounded?
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