earth-leakage protection
51Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …
52Carbon offset — Part of a series on Green economics Concepts …
53insurance — /in shoor euhns, sherr /, n. 1. the act, system, or business of insuring property, life, one s person, etc., against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a… …
54Tesla coil — at Questacon the National Science and Technology center in Canberra, Australia Uses Application in educational demonstrations, novelty lighting, as well as music Inventor …
55Shielded cable — A shielded cable is an electrical cable of one or more insulated conductors enclosed by a common conductive layer. The shield may be composed of braided strands of copper (or other metal), a non braided spiral winding of copper tape, or a layer… …
56Ministry of Environment (South Korea) — Ministry of Environment, Republic of Korea 환경부 Agency overview Formed December 24, 1994[1] Jurisdiction Government of South Korea Headquarters Gw …
57Water resources — A natural wetland Water resources are sources of water that are useful or potentially useful. Uses of water include agricultural, industrial …
58Pollution — For the Fransisco Battiato album, see Pollution (album). For the Goodies episode, see Pollution (The Goodies). Air pollution from World War II weapon production in Alabama, 1942 …
59Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …
60Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
