Скачать презентацию Lightning conductor A lightning rod US AUS Скачать презентацию Lightning conductor A lightning rod US AUS

Презентация 9.pptx

  • Количество слайдов: 6

Lightning conductor Lightning conductor

A lightning rod (US, AUS) or lightning conductor (UK) is a metal rod or A lightning rod (US, AUS) or lightning conductor (UK) is a metal rod or metallic object mounted on top of an elevated structure, such as a building, a ship, or even a tree, electrically bonded using a wire or electrical conductor to interface with ground or "earth" through an electrode, engineered to protect the structure in the event of lightning strike.

In a lightning protection system, a lightning rod is a single component of the In a lightning protection system, a lightning rod is a single component of the system. The lightning rod requires a connection to earth to perform its protective function. Lightning rods come in many different forms, including hollow, solid, pointed, rounded, flat strips or even bristle brush-like. The main attribute common to all lightning rods is that they are all made of conductive materials, such as copper and aluminum. Copper and its alloys are the most common materials used in lightning protection.

The principle of the lightning rod was first detailed by Benjamin Franklin in Pennsylvania The principle of the lightning rod was first detailed by Benjamin Franklin in Pennsylvania in 1749, who in the subsequent years developed his invention for household application (published in 1753) and further improvements towards a reliable system around 1760. Nevyansk Tower in Russia crowned with a metallic rod grounded through a complex system of rebars (some are seen at the basement) "Machina meteorologica" invented by Diviš worked like a lightning rod Franklin’s earliest papers on electricity

As buildings become taller, lightning becomes more of a threat. Lightning can damage structures As buildings become taller, lightning becomes more of a threat. Lightning can damage structures made of most materials, such as masonry, wood, concrete and steel, because the huge currents and voltages involved can heat materials to high temperature, causing a potential for fire.