water-oil displacement
51War in Darfur — Situation in Darfur redirects here. For the criminal investigation started by the International Criminal Court see International Criminal Court investigation in Darfur, Sudan. Conflict in Darfur Date 2003–2009[1]/2010 …
52India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
53tunnels 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 …
54Stirling engine — Alpha type Stirling engine. There are two cylinders. The expansion cylinder (red) is maintained at a high temperature while the compression cylinder (blue) is cooled. The passage between the two cylinders contains the regenerator …
55Ford Flathead engine — The Flathead was the first independently designed and built V8 engine produced by the Ford Motor Company for mass production and ranks as one of the company s most important developments. Before the 1932 introduction of this engine (and the… …
56Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
57Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …
58Motorcycle engine — A Honda Super Cub engine. The most popular motorcycle in history, with over 60 million produced …
59List of Peruvian Navy ships — List of ships of the Peruvian Navy currently comprising almost every Peruvian warship commissioned after 1840.Vessels Acquired in the 1840s and 1850sPresident Castilla sought to expand and well equip the Peruvian Navy. His naval policy was to if… …
60sensory reception, human — Introduction means by which humans react to changes in external and internal environments. Ancient philosophers called the human senses “the windows of the soul,” and Aristotle described at least five senses sight, hearing, smell, taste, and… …
