lightning rod


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Related to lightning rod: Lightning Protection

lightning rod,

a rod made of materials, especially metals, that are good conductors of electricity, which is mounted on top of a building or other structure and attached to the ground by a cable. By virtue of its position, shape, and conductivity the rod attracts lightninglightning,
electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cloud and another (intercloud), between a cloud and the earth, or earth and
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 discharges much more readily than the building on which it is mounted. When struck, the connecting cable carries the discharge safely into the ground, preventing any damage to the building. Benjamin FranklinFranklin, Benjamin,
1706–90, American statesman, printer, scientist, and writer, b. Boston. The only American of the colonial period to earn a European reputation as a natural philosopher, he is best remembered in the United States as a patriot and diplomat.
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, in his kite experiment (1752), proved that lightning and electricity are identical and subsequently invented the lightning rod.

lightning rod

[′līt·niŋ ‚räd]
(electricity)
A metallic rod set up on an exposed elevation of a structure and connected to a low-resistance ground to intercept lightning discharges and to provide a direct conducting path to ground for them.

lightning conductor, lightning rod

lightning conductor
A metallic cable or rod, running from the highest point on the roof of a building (and insulated from it) to the ground; protects the building, should lightning strike, by providing a direct path to ground.

lightning rod

A rod-like electrical conductor attached to the highest exterior point of a building; provides a direct electrical path to the ground if lightning strikes the building, furnishing protection against lightning-induced damage; invented in 1752 by Benjamin Franklin, who established that lightning is an electrical phenomenon.
References in periodicals archive ?
This is accomplished by surrounding it in what is known as a Faraday cage whereby a system of lightning protection conductors and lightning rods are installed on the roof of a building to intercept any lightning before it strikes.
The second and fatal blow was struck later in the same year when he invented the lightning rod. With Franklin's scientific explanations of lightning, the question that had so long taxed the minds of the world's leading theologians-"Why should the Almighty strike his own consecrated temples, or suffer Satan to strike them"-could finally be answered rationally.
The lightning rod is designed to transfer lightning away from buildings during an electrical storm.
It has long had a lightning rod, which was last updated in 2005.
Multnomah County is possibly Oregon's most unusual jurisdiction: it is the most populous county in the state and the smallest; and it is frequently the lightning rod for issues that reflect the state's urban-rural makeup.
Growth of the Berkley Company would continue with rods, reels, and baits, including Trilene XL and XT, Lightning Rod, and PowerBait, which led to FireLine and Gulp!, and most recently, Havoc and NanoFil.
The "lightning rod" service itself consists of nothing more, as the narrator confesses to himself at one point, than getting a woman "to stick her fanny through a hole in a wall." These holes connect the men's and women's disability stalls in office toilets; women are hired by Joe's agency to perform routine office tasks as secretaries or assistants, as well as secretly to service male "high performers" in conditions of guaranteed anonymity.
The rock and lime quarry--to be built on 87.68 acres on Ditmore Ford Road in an area that had been zoned for agriculture--became a lightning rod for controversy after several neighbors raising concerns about traffic safety, noise, air pollution, possible environmental problems and the potential decline of property values.
With a little work we had it looking pretty good, except we were missing the glass ball and cow from the lightning rod. I posted an ad online, hoping to find them so we could complete the project.
He/she (the gender is not given) cites evidence that men who use the "lightning rod" services make for better, healthier, more pleasant workers--they complain less about their work and working conditions, they are willing to work overtime (and sometimes for no extra pay), they exhibit an esprit de corps remarkable in comparison with men in earlier studies.
Pie's advocacy for produce and against meat and dairy should make it a lightning rod for the politically corpulent processed-food industry.
The most celebrated skyscraper in New York City is an up sort of place, with tourists ushered on gleaming elevators to teeming observation decks, above which a tall lightning rod tickles the clouds.

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