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  • Electronic Resource  (20)
  • 1990-1994  (19)
  • 1940-1944  (1)
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  • Electronic Resource  (20)
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  • 1
    Electronic Resource
    Electronic Resource
    The Evolution of the Stars (1940)
    [s.l.] : Nature Publishing Group
    Nature 146 (1940), S. 97-98 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PROF. GAMOW appears to agree with our view that accretion of hydrogen by the stars from the cosmical cloud would be important if the rate were sufficiently rapid to compensate the transmutation of hydrogen within the stars. He believes, however, that the accretion rate is too low for this to be ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/146097b0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Back-scattering of sunlight by ice grains in the mesosphere (1991)
    Springer
    Earth, moon and planets 52 (1991), S. 161-170 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Small dielectric ice particles of radius ~0.25 Μm, which are known to be present in the mesophere, scatter a fraction of incident sunlight in backward directions that do not reach the Earth. This back-scattered fraction is rigorously calculated using Mie theory for a uniform distribution of particles distributed over a sunlit hemisphere. Such calculations provide necessary information for estimating equilibrium surface temperatures of the Earth under different conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00054181
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ice particles and the greenhouse (1991)
    [s.l.] : Nature Publishing Group
    Nature 350 (1991), S. 467-467 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Within the framework of a suitable model the properties of the Earth's green-house can be calculated from tables of ab-sorptivities of the greenhouse gases1. We find that, taking the Earth's albedo to be 0.30, the Earth's effective infrared temperature with no greenhouse would be about 255 K. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/350467a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The extragalactic Universe: an alternative view (1990)
    [s.l.] : Nature Publishing Group
    Nature 346 (1990), S. 807-812 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] OVER the past twenty years, studies of the extragalactic Universe have been carried out by many astrophysicists - this is one of the most popular and spectacular branches of observational and theoretical astrophysics. In this period, a framework of belief has grown up in such a way that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/346807a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Sunspots and influenza (1990)
    [s.l.] : Nature Publishing Group
    Nature 343 (1990), S. 304-304 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] sir-Some years ago, Hope-Simpson1 pointed out a remarkable coincidence between peaks in the sunspot curve, when solar activity is at a maximum, and the occurrence of influenza pandemics asso­ciated with antigenic shifts of the virus. He pointed to five coincidences over the period ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/343304a0
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  • 6
    Electronic Resource
    Electronic Resource
    Big Bang contd.. . (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 287-288 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - There are several points in the article by Peebles et al.l on the standard relativistic hot Big Bang cosmology with which we could take issue, but here we confine ourselves to the most important ones. Contrary to what Peebles et al. claim, if a thermalizing agent absorbing and re-emitting ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/357287b0
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  • 7
    Electronic Resource
    Electronic Resource
    On the relation of the large numbers problem to the nature of mass (1990)
    Springer
    Astrophysics and space science 168 (1990), S. 59-88 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The large numbers problem is usually stated in terms of coincidences between dimensionaless numbers of order 1040, constructed from quantities arising in local physics on the one hand and cosmology on the other hand. The problem is usually thought of in terms of explaining these coincidences. In the Introduction it is shown that the coincidences are all derivative from the same source; namely, a multiplying constant of order 10−38 which appears in the mass-gravitational physical action formula, when the latter is expressed in its most economical form as a single term. Thus the problem can be seen to arise from the smallness of this mass-gravity coupling rather than from coincidences which have no particular significance in themselves. A hint towards explaining the origin of this very small number arises already in the classical theory, but a proper understanding appears only in a quantum formulation. Such a formulation leads to a removal of 10−38 from the action and to its replacement byg 2, the strong coupling constant. In the outcome it turns out that the nucleon mass can be calculated to within about 15% of the experimentally-determined value of 938 MeV, a result which strongly supports the proposition that physics, even in its apparently most fundamental form, cannot be separated from cosmology. Cosmology is not simply an application of physics, as it is commonly supposed to be. Much of the great complexity of modern physics is probably due to attempting to formulate the basic laws in the absence of cosmology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00654594
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    The case against graphite particles in interstellar space (1992)
    Springer
    Astrophysics and space science 196 (1992), S. 167-169 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Graphite flakes are excluded as a major component of interstellar grains because their ultraviolet extinction peaks occur at wavelengths longward of 2700 Å. Mie calculations for spherical graphite particles are shown to have no physical or astronomical relevance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00645249
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  • 9
    Electronic Resource
    Electronic Resource
    Light element synthesis in Planck fireballs (1992)
    Springer
    Astrophysics and space science 198 (1992), S. 177-193 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that all the light elements are synthesised in Planck fireballs, and with their relative abundances agreeing with empirically observed relative abundances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644753
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  • 10
    Electronic Resource
    Electronic Resource
    Mathematical theory of the origin of matter (1992)
    Springer
    Astrophysics and space science 198 (1992), S. 195-230 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that from a simple and elegant action it is possible to obtain: (i) the equations of classical dynamics, (ii) Schrödinger's equation, (iii) the dynamical equation of special relativity, (iv) scale-invariant gravitation including general relativity, (v) the mathematical theory of the origin of matter, and (vi) the potential function of inflationary theory. When the action term in question is related to the electromagnetic theory an ugly feature arises, however. There must be a multiplication by a small dimensionless number of order 10−38. If this ugly feature is to be avoided, matter must be taken to originate, not as particles observed in the laboratory but as Planck particles. The decay of each such particle into ≈ 1019 hadrons then explains the genesis of numbers of order 1038 that appear in physics and cosmology. It also raises questions concerning primordial nucleosynthesis which were discussed in the preceding paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644754
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