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  • 1
    Electronic Resource
    Electronic Resource
    Dirac's Cosmology and the Dating of Meteorites (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 170-171 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is interesting to note that an argument based upon such a fundamental consideration as Mach's principle has also been used for supporting the idea of a varying gravitational constant3 〉4 and hence by implication perhaps also the p-decay constant. In the absence of a clear theory, the only type ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/183170a0
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  • 2
    Electronic Resource
    Electronic Resource
    Dating the Galaxy by Uranium Decay (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 329-330 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AHP1 has recently discussed the metal content of stars in clusters of various ages. One striking thing about Arp's data is the indication that the heavy elements were generated primarily by early stars in the halo population. He finds that the very old galactic cluster NOG 188 (16 x 109 years old) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/194329a0
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  • 3
    Electronic Resource
    Electronic Resource
    Dirac's Cosmology and Mach's Principle (1961)
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 440-441 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Dirac noted that most physical and astrophysical dimensionless constants are of the order of magnitude of integral powers (positive and negative) of the number 1040, where such numbers as mv\me ~ 1,800 and hc/e2 ~ 137 are said to be of the order of unity, the zero power of 1040. He considered ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/192440a0
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  • 4
    Electronic Resource
    Electronic Resource
    Internal Rotation of the Sun (1970)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 8 (1970), S. 297-328 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.08.090170.001501
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  • 5
    Electronic Resource
    Electronic Resource
    Origin of the Microwave Radio Background (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 574-575 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECENTLY, Miss Kaufman stated1 that the newly discovered microwave radio background2 at 7-3 cm wavelength may be emission from ionized intergalactic hydrogen, rather than primordial fireball radiation from the big bang3. In this new picture the intergalactic hydrogen would have a temperature of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211574a0
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  • 6
    Electronic Resource
    Electronic Resource
    PHOTOSPHERIC FACULAE AND THE SOLAR OBLATENESS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 224 (1973), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1973.tb41471.x
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  • 7
    Electronic Resource
    Electronic Resource
    Solar ellipticity fluctuations yield no evidence of g -modes (1986)
    [s.l.] : Nature Publishing Group
    Nature 319 (1986), S. 128-131 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The surface velocity amplitudes of solar g-modes appear to be between 0.1 and 1 m s-1, but there is little agreement between different observers on the excitation spectrum. Several groups have, however, claimed detection of a 160.01-min period solar oscillation4'5 also with a velocity amplitude ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/319128a0
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  • 8
    Electronic Resource
    Electronic Resource
    Evidence for a solar distortion rotating with a period of 12.2 days (1976)
    Springer
    Solar physics 47 (1976), S. 475-515 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Most of the day-to-day fluctuation (originally believed to be error) in the Princeton solar oblateness observations is well described as the signal due to a ∼10 km distortion of the solar photosphere rotating rigidly with a period of 12.22±0.12 days (sidereal). This ‘solar-rotator’ signal is well-defined by the observations and seems clearly significant statistically. Owing to the apparent precession of the solar spin-axis on the sky, the signal is not strictly periodic and has a wave-form that evolves with time in a predictable way. The previously discussed enigmatic periodicity of the oblateness residuals, for which no non-solar sources were found, is eliminated when the solar-rotator signal is subtracted. The residual errors are then found to be normally distributed and uncorrelated. Including the solar-rotator signal in the least-square fit increases the implied static oblateness by 16% to Δr = 45.8±3.3 millisec (equatorial excess radius). Both the static oblateness signal and the solar-rotator signal might be interpreted phenomenonologically as ‘brightness’ signals due to a rigidly rotating non-uniform distribution of temperature in the upper photosphere. However, such a description encounters physical difficulties when the requirements of energy and momentum balance are considered. Including the excess static oblateness yields a distortion in the form of an ellipoid whose major axis is tilted 85° from the solar axis. Possible conflicts with other recent observations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00154759
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  • 9
    Electronic Resource
    Electronic Resource
    Oblateness of the Sun in 1983 and relativity (1985)
    [s.l.] : Nature Publishing Group
    Nature 316 (1985), S. 687-690 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Measurements of the solar oblateness obtained during 1983 from Mount Wilson, California, yield a value with an upper bound only half of that observed in 1966. This difference may support the conjecture that the solar quadrupole moment slowly oscillates. A knowledge of the character of such an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/316687a0
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  • 10
    Electronic Resource
    Electronic Resource
    Evidence of global circulation currents from solar-limb temperature variations (1987)
    [s.l.] : Nature Publishing Group
    Nature 328 (1987), S. 326-327 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If the latitudinal differential rotation is 'driven' by angular momentum transport throughout the convection zone, then meridional flows and large-scale convection ('giant cells') should be present. A corresponding modulation in the convective heat flux due to these giant cells is then also ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/328326a0
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