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  2. F region - Wikipedia

    en.wikipedia.org/wiki/F_region

    The F region of the ionosphere is home to the F layer of ionization, also called the Appleton–Barnett layer, after the English physicist Edward Appleton and New Zealand physicist and meteorologist Miles Barnett. As with other ionospheric sectors, 'layer' implies a concentration of plasma, while 'region' is the volume that contains the said layer.

  3. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    Relationship of the atmosphere and ionosphere. The ionosphere (/ aɪ ˈ ɒ n ə ˌ s f ɪər /) [1] [2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar ...

  4. File:Trimethoxyboroxine (TMB) Fire Extinguisher, circa 1967.jpg

    en.wikipedia.org/wiki/File:Trimethoxyboroxine...

    English: 2.5 gallon Trimethoxyboroxine (TMB) Fire Extinguisher for magnesium fires, made by Ansul in the 1960s for use by the U.S. Navy. Date 5 June 2016, 15:18:24

  5. Thomas J. Martin - Wikipedia

    en.wikipedia.org/wiki/Thomas_J._Martin

    Thomas J. Martin (1842–1872) [1] was awarded a patent for improvement to the fire extinguisher in 1872. [2] [3] [4] [5] The invention involved the use of pipes to ...

  6. Bromochlorodifluoromethane - Wikipedia

    en.wikipedia.org/wiki/Bromochlorodifluoromethane

    Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br.It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [1]

  7. International Reference Ionosphere - Wikipedia

    en.wikipedia.org/wiki/International_Reference...

    For a specified geographic location, time, and date, IRI provides average monthly values for electron density, electron temperature and ion temperature, and the molecular composition of the ions in the range of altitudes from 50 km to 2000 km. [1] The latest standard is IRI-2012. [1] [2] A new version, IRI-2016, has since been released. [3]

  8. Early thermal weapons - Wikipedia

    en.wikipedia.org/wiki/Early_thermal_weapons

    The Siege and Destruction of Jerusalem by the Romans Under the Command of Titus, A.D. 70, by David Roberts (1850), shows the city burning. Early thermal weapons, which used heat or burning action to destroy or damage enemy personnel, fortifications or territories, were employed in warfare during the classical and medieval periods (approximately the 8th century BC until the mid-16th century AD).

  9. Menard, Texas - Wikipedia

    en.wikipedia.org/wiki/Menard,_Texas

    Menard is located along the banks of the San Saba River at the junction of U.S. Highways 83 and 190, approximately 140 miles northwest of Austin and San Antonio in central Menard County. [5] According to the United States Census Bureau, the city has a total area of 2.1 square miles (5.4 km 2), all land.

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