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  • 1
    Digitale Medien
    Digitale Medien
    SOME COMMENTS ON THE CALCULATION OF THE GRAVITATIONAL AND MAGNETIC ATTRACTION OF A HOMOGENEOUS RECTANGULAR PRISM (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 21 (1973), S. 0 
    Details
    ISSN: 1365-2478
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Physik
    Notizen: The use of arctangents rather than arcsines in the expression for the gravitational attraction of a homogeneous rectangular prism reduces computational difficulties. Once a subroutine is available to compute one component of attraction in a Cartesian coordinate system, the other components may be obtained by cyclic permutation of the field point and body coordinate parameters. This technique also readily provides derivatives of the gravitational attraction and hence forms a compact method for the calculation of a magnetic anomaly due to a homogeneous rectangular magnetic prism.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2478.1973.tb00014.x
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Absolute gravity measurements on the canadian gravity standardization network (1991)
    Springer
    Journal of geodesy 65 (1991), S. 170-178 
    Details
    ISSN: 1432-1394
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Summary Absolute measurements of gravity have been made at 6 locations ranging from Ottawa, Ont., in southern Canada, to Alert, N.W.T., the world's most northerly permanent settlement, as part of a program to provide scale and level for the Canadian Gravity Standardization Network (CGSN). Except at Resolute, N.W.T., CGSN-74 gravity values, upon which our gravity reductions are currently based, agree with the absolute gravity meter results to within about .25µm/s2. The scale of our CGSN-80 gravity network, upon which our spring-balance type gravity meter scale constants are derived, agrees with the scale defined by the absolute gravity measurements to within about one part in ten thousand.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00806346
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  • 3
    Digitale Medien
    Digitale Medien
    An unusual long-delay echo (1990)
    [s.l.] : Nature Publishing Group
    Nature 347 (1990), S. 131-131 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR-Long-delay echoes (LDEs) are weak signals heard at times ranging from several hundred milliseconds to several seconds after an initial radio transmission. They were first reported in the late 1920s (refs 1-3) and have often been reported since (see ref. 4). But they are elusive, and might be ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/347131a0
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