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• Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …   Wikipedia

• Nortel ERS 5500 — Ethernet Routing Switch 5500 system or (ERS 5000) in computer networking are stackable layer 3 switches designed and manufactured by Nortel capable of stacking 8 switches in a 640 Gb/s Nortel FAST Stacking [ [http://products.nortel.com/go/product …   Wikipedia

• Avaya ERS 5500 — Avaya Ethernet Routing Switch 5500 Series ERS 5510 48T/5510 24T Rack mountable: 19 inch standard rack ERS 55 …   Wikipedia

• 2009–2011 Toyota vehicle recalls — Two of the vehicles under recall: the Toyota Camry (top) and the Toyota Corolla Three separate but related recalls of automobiles by Toy …   Wikipedia

• Space elevator safety — There are many safety issues associated with the construction and operation of a space elevator. A space elevator would present a considerable navigational hazard, both to aircraft and spacecraft. Aircraft could be dealt with by means of simple… …   Wikipedia

• Industrial radiography — is the use of ionizing radiation to view objects in a way that cannot be seen otherwise. It is not to be confused with the use of ionizing radiation to change or modify objects; radiography s purpose is strictly viewing. Industrial radiography… …   Wikipedia

• materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …   Universalium

• wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …   Universalium

• Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …   Universalium

• Digital television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB …   Wikipedia

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium