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  • [[Image:fallout shelter.jpg|thumb|A sign pointing to an old fallout shelter in New York City.]] ...from radioactive debris or [[nuclear fallout|fallout]] resulting from a [[nuclear explosion]]. Many such shelters were constructed as [[civil defense]] measu
    24 KB (3,899 words) - 19:58, 11 June 2010
  • ...e of microporosity, just 1 [[gram]] of activated carbon has a surface area in excess of 500&nbsp;m<sup>2</sup> (about one tenth the size of a football fi ...at temperatures in the range 600&ndash;900 °C, in absence of air (usually in inert atmosphere with gases like [[argon]] or [[nitrogen]])
    41 KB (5,738 words) - 16:47, 27 September 2010
  • Mercury occurs in deposits throughout the world mostly as [[cinnabar]] ([[mercuric sulfide]]) ...ration]]. It is used in lighting: electricity passed through mercury vapor in a phosphor tube produces short-wave [[ultraviolet light]] which then causes
    69 KB (10,077 words) - 21:35, 20 September 2010
  • ...to produce [[ceramic]]s, but many different ceramic materials are now used in domestic, industrial and building products. ...ithstand chemical erosion that occurs in an acidic or caustic environment. In many cases withstanding erosion from the acid and bases applied to it. Cera
    28 KB (3,876 words) - 10:08, 20 September 2010
  • ...="#90FF00"|[[Ruthenium|Ru]]||bgcolor="#90FF00"|[[Rhodium|Rh]]||Pd||Ag||Cd||In||Sn||Sb||Te||I ||Xe ...temperatures, wire filaments, casting molds, and chemical reaction vessels in corrosive environments. Partly due to the high melting point, refractory me
    25 KB (3,519 words) - 10:13, 20 September 2010
  • ...optics)|translucent]] nature and the way [[light]] [[scattering|scatters]] in the material; however, it feels like [[Polystyrene#Solid foam|expanded poly ...s a result of a bet with Charles Learned over who could replace the liquid in 'jellies' with gas without causing shrinkage.<ref>{{cite journal
    26 KB (3,758 words) - 10:14, 20 September 2010
  • ...PE is provided in Figure 1 and that of a 2, 6-xylenol derived PPO is shown in Figure 2. Either class can have the oxygen atoms attached at various positi ...tal of 5 rings, and 4 ether linkages. Meta substitution of the aryl rings in these materials is most common and often desired. Longer chain analogues w
    18 KB (2,654 words) - 10:18, 20 September 2010
  • ...other three in this group, often featuring slightly diminished capacities in other fields by comparison. ...on of ETFE occurs in the same way as a number of other [[fluoropolymer]]s, in terms of releasing hydrofluoric acid (HF). HF is extremely corrosive, and
    7 KB (926 words) - 10:20, 20 September 2010
  • ...Traditionally, ‘lagging indicators’ have been used to identify trends in accidents that are occurring within the workplace. Lagging indicators inclu However, in recent years an increasing body of evidence suggests that more attention sh
    33 KB (4,747 words) - 21:32, 20 September 2010
  • ...has been used in rocket nozzles and is a significant component of planned space telescopes. Because of its relatively high transparency to X-rays and other ...n cause a chronic life-threatening allergic disease called [[berylliosis]] in susceptible persons.
    41 KB (5,890 words) - 21:34, 20 September 2010
  • {{Redirect|Crown Fire|the 2010 wildfire in Southern California|2010 California wildfires}} ...|thumb|right|upright=2|alt=A daytime fire engulfing large trees|A wildfire in California, USA on 5 September 2008]]
    88 KB (12,641 words) - 21:35, 20 September 2010
  • ...]al [[disease]]s''' — nonexistent, named medical conditions which appear in fiction where they have a '''major''' plot or thematic importance. They may Items in this list are followed by a brief description of symptoms and other details
    66 KB (10,587 words) - 21:08, 21 September 2010
  • ...heavy, odorless [[noble gas]], xenon occurs in the [[Earth's atmosphere]] in trace amounts.<ref>{{cite web ...as a result of [[nuclear fission]] and acts as a [[neutron absorber]] in [[nuclear reactor]]s.<ref name="stacey" />
    82 KB (11,842 words) - 21:02, 24 September 2010
  • ...lly charged.<ref name="Hoffman-1998-p32">Hoffman (1998), p. 32, See review in The [[New York Times]][http://www.nytimes.com/books/first/h/hoffman-terrori ...o differences of opinion between various members about the use of violence in the context of conflicts over national liberation and self-determination."<
    70 KB (10,299 words) - 21:56, 26 September 2010
  • {{Redirect|Nuclear clock|the clock as a measure for risk of catastrophic destruction|Doomsday ...in Switzerland, started operating in 2004 at an uncertainty of one second in 30 million years
    32 KB (4,699 words) - 14:52, 10 December 2011