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lightning rod |
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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 lightning lightning, 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 ..... 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 Franklin 2)). The phenomenon of electricity interested him deeply, and in 1748 he turned his printing business over to his foreman, intending to devote his life to science. His experiment of flying a kite in a thunderstorm, which showed that lightning is an electrical discharge (but which ..... Click the link for more information. , in his kite experiment (1752), proved that lightning and electricity are identical and subsequently invented the lightning rod. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The CAISI Repeater Modules, Amon said--which contain a BR350 radio with a lightning arrestor and surge suppressor in the NEMA enclosure--provide access point service for wireless scanner devices, bridge the network to the root radio and act as repeaters for other CRMs. With Power over Ethernet (POE) capability and internal lightning arrestor, expensive external feedlines and lightning arrestors can be eliminated, reducing system cost and signal-loss. The MP-620 has a weatherized package, suitable for extreme outdoor environments, complete with a lightning arrestor. |
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Lightning arrestor
