lightning rod


Also found in: Dictionary, Thesaurus, Idioms, Wikipedia.
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
..... Click the link for more information.
 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.
..... Click the link for more information.
, 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 ?
I knew it was a lightning rod of a movie,'' Hancock says of his film.
Readers are cautioned not to put undue reliance on such forward-looking statements, which are not a guarantee of performance and are subject to a number of risks, uncertainties, and other factors, many of which are outside of Lightning Rod Software's control, that could cause actual results and the timing of certain events to differ materially from such statements.
The history of lightning protection goes back to the lightning conductor, known as a lightning rod in the United States, which was invented by one of America's Founding Fathers, Benjamin Franklin in 1749.
The second and fatal blow was struck later in the same year when he invented the lightning rod.
To quote a retired lightning rod salesman, "Lightning rods are a true insurance policy through prevention, rather than dealing with the damage after the fact
amateurish frequency of underscoring ("but that was exactly what a lightning rod was supposed to do"--one of nine examples on a single page); and those word repetitions that were the bane of Flaubert ("the funny thing was that he just thought it was funny to begin with").
He had received an email from a woman who said she had some glass balls and a lightning rod for sale.
How reasonably are we to consider the narrator's arguments about the benefits of a lightning rod system?
12, police and firefighters launched a rescue operation for a seagull trapped atop the building, its wing impaled on a lightning rod.
This interesting collection of essays examines the scientific and cultural significance of the lightning rod over the past 250 years.
Berkley and Pflueger team up to fight walleyes and stamp out missed strikes with the new 6-6 M Moderate Lightning Rod Shock ($49.