transition of cracks
51Mécanique de la rupture — La mécanique de la rupture tend à définir une propriété du matériau qui peut se traduire par sa résistance à la rupture fragile (fracture). Car si les structures sont calculées pour que les contraintes nominales ne dépassent pas, en règle… …
52Nobel 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,… …
53Transparency and translucency — Diaphanes redirects here. For the genus of firefly, see Diaphanes (beetle). Translucence redirects here. For other uses, see Translucence (disambiguation). Translucent redirects here. For the Japanese manga series, see Translucent (manga).… …
54Domestic responses to the 2011 Egyptian revolution — This article is about the domestic responses to the 2011 Egyptian protests. For international reactions, see International reactions to the 2011 Egyptian revolution. There have been numerous domestic responses to the Egyptian Revolution of 2011.… …
55ARAB WORLD, 1945–2006 — The Arab world is divided into four subregions: the Maghreb (morocco , tunisia , algeria , libya , Mauritania), the Nile Valley (egypt and Sudan), the Fertile Crescent (syria , lebanon , iraq , jordan , and the palestinian authority ), and the… …
56colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …
57chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
58Noble gas — Group 18 Period 1 2 He 2 …
59Inauguration of Barack Obama — 2009 Presidential Inauguration of Barack Obama Barack Obama takes the oath of office of the President of the United …
60Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) …
