A lightning rod is the system's part of a lightning secure system. To accomplish its secure role, the lightning rod should be joint to the earth. Lightning rods can be solid, hollow, rounded, pointed, flat strips, in appearance.
A lightning rod, also known as a lightning conductor, is a metal rod that is installed on a structure to protect it from lightning strikes. If lightning strikes the structure, it will strike the rod first and be carried to the ground via a wire, rather than going through the structure, where it could cause a fire or electrocution. Finials, air terminals, and strike termination devices are all terms used to describe lightning rods.
All lightning rods have one thing in common: they're all comprised of conductive materials like copper and aluminum. The most frequent materials used in protective devices are copper and copper alloys.
Benjamin Franklin
devised the pointed lightning rod conductor, also known as a lightning attractor
or Franklin rod, in 1752 as part of his pioneering investigation of
electricity. Franklin was the first to offer a system for testing his hypothesis, although not being the first to identify a link between
electricity and lightning.
'The electrical fire would, I believe, be dragged out of a cloud silently, before it could come near enough to hit,' Franklin speculated, using an iron rod honed to a point. Before his alleged kite attempt, Franklin theorized on lightning rods for several years.
