Lightning rod - Wikipedia
网页A lightning arrester is a device, essentially an air gap between an electric wire and ground, used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning.
Lightning rod | Protection, Safety & Prevention | Britannica
网页2024年9月3日 · Lightning rod, metallic rod (usually copper) that protects a structure from lightning damage by intercepting flashes and guiding their currents into the ground. Because lightning tends to strike the highest object in the vicinity, rods are typically placed at the apex of a structure and along its.
Lightning | Voltage, Causes, & Facts | Britannica
网页2024年9月11日 · lightning, the visible discharge of electricity that occurs when a region of a cloud acquires an excess electrical charge, either positive or negative, that is sufficient to break down the resistance of air. Is ball lightning real? Learn about the mysterious phenomenon of ball lightning. See all videos for this article.
LIGHTNING CONDUCTOR中文 (简体)翻译：剑桥词典
网页someone or something that takes all the blame or criticism in a situation, although other people or things are responsible too. 替罪羊，代人受过者;引火烧身的人(或事) In a harsh …
How a lightning conductor works & Corona Discharge: Basic …
网页2021年9月10日 · How a lightning conductor works & Corona Discharge: Basic Working principle of lightning Conductor. In this short video, i explain how a lightning conductor works and the principle of corona...
What is a lightning conductor? - Definition | CK-12 Foundation
网页A lightning conductor is a metallic rod or rod-like structure mounted on top of a building or structure to protect it from lightning strikes. It works on the principle of conducting the high voltage current from the lightning strike safely to the ground, thereby preventing any damage to the building or structure.
Lightning Rods - Lightning Rod - HowStuffWorks
网页2022年5月5日 · A lightning rod is very simple — it's a pointed metal rod attached to the roof of a building. The rod might be an inch (2 centimeters) in diameter. It connects to a huge piece of copper or aluminum wire that's also an inch or so in diameter. The wire is connected to a conductive grid buried in the ground nearby.
What are lightning conductors & how do they work? - AXIS
网页A metal rod placed on top of a building to protect it from a lightning strike is known as a Lightning Conductor. This conductor is struck first in lightning without hitting the building directly, preventing fire or electrocution.
The Science Behind Lightning Rods: How Do They Work?
网页2024年1月29日 · A lightning rod, or lightning conductor, is a metal rod mounted on top of a building and connected to the ground through a wire. The key to its functionality lies in its material and design. Typically made of copper or aluminum, which are excellent conductors of electricity, lightning rods provide a low-resistance path to the ground.
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Lightning Protection Overview
网页2016年9月19日 · Copper and aluminum main cable conductors for lightning protection are designed to a smooth weave or rope-lay standard using smaller gauge individual wires. This construction allows a maximum surface area per unit weight of conductor to accommodate lightning which travels quickly on the surface.