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Lehnert, B. (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Dear Sir, During the International Geophysical Year a number of artificial satellites are planned to be launched into the earth's upper atmosphere. A satellite of the proposed type will move with a velocity of about 7.7 x 103 metres/sec. In the American project the motion is expected to take place in an orbit which has its nearest approach to the earth's surface a t an altitude around 500 km. The satellite will have the shape of a sphere, about 0.5 metres in diameter.DOI: 10.1111/j.2153-3490.1956.tb01239.x
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    • ALLEN,C. W., 1955: Astrophysical quantities, Univ. of London, The Athlone Press.
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    • - 1915: O n the decrease of velocity of swiftly moving electrified particles in passing through matter, ibid., 30, P. 581.
    • CHAPMANS.,, and COWLINGT,. G., 1939: T h e mathenratical theory of non-uniform gases, Cambridgc Univ. Press, p. 346.
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    • KUIPBRG, . P., 1954: T h e earth asuplanet, Univ. of Chicago Press.
    • NICOLET,M., 1953: The collision frequency of electrons in the ionosphere. /. Atmosph. Terr. Phys., 3, p. 200.
    • SPITZERL,.. 1956: Physics of f i t l l y ionized gases, Interscience Publ., N.Y.
    • SINGER,S. F., 1956 a: Measurements of interplanetary dust, Physics Dept. Techn. R e p . No. 33, Univ. of Maryland.
    • - 1956 b: Studies of a minimum orbital unmanned satellite of the earth (MOUSE). Part 11. Orbits and lifetimes of minimum satellites. Astronautica Acta, 2, p. 125.
    • International Geophysical Year, A special report prepared by the National Academy of Sciences for the Committee on Appropriations of the United States Senate, presented by Mr. Hayden, May 28, 1956, United States Government Printing Office, Washington: 1956.
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