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61Gas core reactor rocket — Gas core reactor rockets are a conceptual type of rocket that is propelled by the exhausted coolant of a gaseous fission reactor. The nuclear fission reactor core may be either a gas or plasma. They may be capable of creating specific impulses of …
62Wind — For other uses, see Wind (disambiguation). Wind, from the …
63Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
64nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
65SR-71 Blackbird — infobox Aircraft name = SR 71 Blackbird caption =An SR 71B Trainer over the Sierra Nevada Mountains of California in 1994. Note second cockpit is raised for the instructor. type = Strategic Reconnaissance manufacturer = Lockheed Skunk Works… …
66Nuclear fusion — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical dec …
67Economy of Armenia — Armenia is the second most densely populated of the former Soviet republics. It is situated between the Black Sea and the Caspian Sea, bordered on the north and east by Georgia and Azerbaijan and on the south and west by Iran and Turkey.Until… …
68List of ISO standards — This is a list of ISO standards that are discussed in Wikipedia articles. For a list of all the more than 16,000 ISO standards (as of 2007), see the [http://www.iso.org/iso/en/CatalogueListPage.CatalogueList ISO Catalogue] .About 300 of the… …
69Asbestos — For other uses, see Asbestos (disambiguation). Fibrous asbestos on muscovite …
70Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
