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A typical lightning rod on a rooftop

A lightning rod or lightning conductor is an iron rod that is used to make lightning strike it, rather than strike something else. It is part of a lightning protection system. Such a system is made of many such rods. These rods are usually placed at high points of buildings and structures. In addition, paths are made the electricity can take from the rooftop to the ground, it was made in the year 1749 later improved in 1752.