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  • 1
    Electronic Resource
    Electronic Resource
    Sources of Harmonics of Low Order in the External Gravity Field of the Earth (1963)
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 1186-1186 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Here G is the constant of gravitation, M is the mass of the Earth, R is a scale factor, commonly the equatorial radius of the Earth, and Pn(cos 0) is the Legendre polynomial of degree n. King-Hele, Cook and Rees1 have recently determined the coefficients of the harmonics of even order up to J12 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1981186a0
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  • 2
    Electronic Resource
    Electronic Resource
    Secular Changes of the Units and Constants of Physics (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 1194-1195 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The measurable quantities of physics are denned in terms of a few of their own class ; these latter cannot be denned verbally in terms of any other entities, but can only be indicated, that is, defined ostensively. Thus, taking length, mass and time as basic mechanical quantities, we can only ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1801194b0
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  • 3
    Electronic Resource
    Electronic Resource
    Angle of Contact of Mercury against a Moving Tungsten Wire (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 366-367 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The mercury surface around the point of entry of the wire was photographed through an optical system such that no light entered the camera from those points of the surface at which 6, the angle of inclination of the surface to the horizontal, exceeded a value f governed by the geometry of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174366a0
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  • 4
    Electronic Resource
    Electronic Resource
    Brightness and Temporal Variation of Radio Emission from Galactic OH (1967)
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 689-690 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If, on the other hand, the third term is dominated by the other two, the characteristic length for gain by stimulated emission is 1/ayvtf If L is the overall length of the column of gas in which stimulated emission occurs, the total gain G is Laii/ii and T = L/Gc The other way of obtaining the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/214689b0
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  • 5
    Electronic Resource
    Electronic Resource
    Suggested Mechanism for the Anomalous Excitation of OH Microwave Emissions from H-II Regions (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 611-612 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Portion of level diagram of OH molecule: (a)~Ground state and electronically excited state C. J, Total angular momentum quantum number (excluding nuclear spin); v, vibrational quantum number, (b) Hyperfine structure of A-doublet, frequencies in Mc/s. F = J ± £ The lines are ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210611b0
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  • 6
    Electronic Resource
    Electronic Resource
    Pumping Mechanisms for Maser Action in Galactic OH (1968)
    [s.l.] : Nature Publishing Group
    Nature 220 (1968), S. 44-46 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If the distribution of the directions of 18 cm radiation from separate sources is random, then it may be shown1 that the total 18 cm power radiated from the neighbourhood of an H-II region is N 7T2 d2 JI dv where N is the number of sources seen from the Earth in that neighbourhood; d is the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/220044a0
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  • 7
    Electronic Resource
    Electronic Resource
    The Earth as a Planet (1970)
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 18-20 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A comparison of the Earth with the Moon and other planets can help considerably in the solving of geophysical problems. Professor Cook deals with some of these problems in this article, which is a summary of the inaugural lecture he gave as professor of geophysics at Edinburgh on January ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/226018a0
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  • 8
    Electronic Resource
    Electronic Resource
    A New Absolute Determination of the Acceleration due to Gravity at the National Physical Laboratory (1965)
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 279-279 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If a body is timed as it crosses two horizontal planes with a vertical separation H, and if the time interval between crossings of the lower plane is T± and of the upper plane T2, then: g=8h/t21-t22 A correction has to be applied for the decrease of gravity with height. In the present ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/208279a0
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of Direction, Frequency and Polarization of Radio Emission from Galactic OH (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 503-504 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Whereas linear polarization might arise from some directional effect such as could be associated with the outward movement of an ionization front bounding an H-II region, circular polarization seems to require magnetic fields. The situation does not correspond, however, to simple Zeeman splitting, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211503a0
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  • 10
    Electronic Resource
    Electronic Resource
    A MEASUREMENT OF THE DIFFERENCE OF GRAVITY BETWEEN THE NATIONAL PHYSICAL LABORATORY, TEDDINGTON AND THE ORDNANCE SURVEY OFFICE, SOUTHAMPTON (1952)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 6 (1952), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Using the Cambridge pendulum apparatus the value of gravity at the National Physical Laboratory has been found to be 69.90 ± 0.16 mgal greater than that at the Ordnance Survey Office, Southampton. The result of a measurement with a Worden gravimeter was 70.36 mgal, and other indirect gravimeter measurements are in satisfactory agreement with the pendulum result.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1952.tb03019.x
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