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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 35-36 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In order to trace any movement of the magnetic pole with increasing height, the above calculations were repeated on a much finer grid in the vicinity of the pole. Thus X, Y and H were computed for values of cos θ = 0.958, 0.962, 0.966, 0.970, 0.974 and 0.978, and φ = 256, 257, 258, 259 and 260 E. ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 155-157 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABOUT two years ago, a detailed study of the thermal history of the Earth was begun at the University of Toronto. First results of this investigation have been presented at several meetings1. It should be emphasized that this study does not pretend to have determined the temperature and heat-flow ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 835-835 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Support for the temperature-pressure hypothesis was obtained using Uffen's4 values of a, which were based on the theory of solids. An independent investigation based on Murnaghan's theory of finite strain has now been carried out, the results of which add further support to the temperature-pressure ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 838-838 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ramsey3 has re-examined this relation from the point of view of the theory of solids, and his conclusions agree with those of Bullen, namely, that the linear relation (1) is valid both in the core and in the mantle below 1,000 km. Ramsey, however, found that the constant k0 had different values in ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 334-336 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have devised a method for determination of myxovirus concentrations, based on the enzymic activity of the virus particles. The action of the virus enzyme-its ability to destroy the haemagglutination-inhibitory capacity of some mucoproteins or to elute the virus from red blood cells-always leads ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 258-259 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] At the boundary between the silicate mantle and the iron core there must be a discontinuity in the melting-point - depth curve, although the actual temperature must be continuous across the boundary. The form of this discontinuity could, mathematically, take any of the three cases shown in Fig. 1. ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 309 (1984), S. 115-115 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has long been tempting to suppose that there is a correlation between changes in the Earth's magnetic field, whose origin lies in the Earth's core, and events at the Earth's surface, but there has been little convincing evidence of such a correlation (see refs 1 and 2 for a sceptical view). ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 305 (1983), S. 582-582 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A RECENT paper by David Stevenson and his colleagues1 attempts to account for the properties (or absence) of intrinsic magnetic fields in the terrestrial planets - Earth, Mercury, Venus and Mars - in terms of their composition, internal structure and thermal history. Except in the case of Earth, ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 297-298 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most theories of the origin of the earth agree that it passed through a molten stage before finally separating into the different layers; but no physical explanation seems to have been given as to how the inner core could have become solid. Urry3 has shown that even an earth formed from the cold ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 231-232 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is a very real problem to find sources of heat beneath the ocean floors. The whole of the observed continental heat flow could be produced by the uranium, thorium and potassium contained in about 25 km. of granite. Granitic type rocks are almost completely absent under the oceans typical oceanic ...
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