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A lightning rod or lightning conductor (British English) is a metal rod mounted on a structure and intended to protect the structure from a lightning strike. If lightning hits the structure, it is most likely to strike the rod and be conducted to ground through a wire, rather than passing through the structure, where it could start a fire or ...
Franklin declared that this "sentry-box experiment" showed that lightning and electricity were one and the same. [15] Franklin realized that wooden buildings could be protected from lightning strikes, and the deadly fires that often resulted, by placing a pointed iron on a rooftop, with the other end of the rod placed deep into the ground.
The lightning rod consists of a metal rod or conductor, typically made of copper or aluminum, that is mounted on the roof of a building and connected to the ground by means of a conductive wire. When lightning strikes, the rod provides a path of least resistance for the electrical charge, allowing it to be safely conducted to the ground rather ...
THE LIGHTNING ROD. Bob Guccione Jr. ... meaning a religion is a system of ideas, and if one of the ideas is martyrdom, and that’s a positive, you’re fighting an enemy that thinks dying is good ...
Franklin observed that lightning frequently destroyed homes by igniting those made of wood. Franklin was determined to prove the presence of electricity in lightning through an experiment. Franklin's experiment, in its initial conception, depended on the completion of Christ Church in Philadelphia , whose steeples would be sufficiently high as ...
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The Greeks and Romans, at least from the Hellenistic period onward, used Neolithic stone axeheads for the apotropaic protection of buildings. [6] A 1985 survey of the use of prehistoric axes in Romano-British contexts found forty examples, of which twenty-nine were associated with buildings including villas, military structures such as barracks, temples, and kilns.
Sullivan's first documented lightning strike was in April 1942. He was said to have been hiding from a thunderstorm in a fire lookout tower. The tower was newly built and had no lightning rod at the time; it was said to have been struck seven to eight times. Sullivan described a scene from within the tower, saying that "fire was jumping all ...