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Franklin's friend Kinnersley traveled throughout the eastern United States in the 1750s demonstrating man-made "lightning" on model thunder houses to show a how an iron rod placed into the ground would protect a wooden structure. He explained that lightning followed the same principles as the sparks from Franklin's electrostatic machine.
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 ...
The thunder house is a scientific model invented by James Lind which gives a spectacular demonstration of the destructive effect of a lightning bolt striking a house with an imperfect lightning conductor. The small wooden house has hinged walls and carries a brass rod representing a lightning rod.
According to the 1767 Priestley account, Franklin realized the dangers of using conductive rods and instead used the conductivity of a wet hemp string attached to a kite. As a result, he was able to remain on the ground and let his son fly the kite from the cover of a shed close by.
System earthing serves a purpose of electrical safety throughout the system that is not caused by a short circuit or other electrical fault.It prevents static buildup and helps protect (as part of a surge protection system) against power surges caused by nearby lightning strikes or switching.
While an estimated 75,000 to 100,000 homes were built through the Sears Modern Homes collection between 1908 and 1942, in styles like Craftsman, Colonial and bungalow, the high cost of shipping ...
Hundreds of devices, including lightning rods and charge transfer systems, are used to mitigate lightning damage and influence the path of a lightning flash. A lightning rod (or lightning protector) is a metal strip or rod connected to earth through conductors and a grounding system, used to provide a preferred pathway to ground if lightning ...
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