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  • 1
    Electronic Resource
    Electronic Resource
    Newtonian and Relativistic Time (1967)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 138 (1967), 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.1749-6632.1967.tb55028.x
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  • 2
    Electronic Resource
    Electronic Resource
    Models of the Universe and Cosmological Time-Scales (1944)
    [s.l.] : Nature Publishing Group
    Nature 154 (1944), S. 477-481 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE two time-scales, one 'dynamical' and the other 'cosmological', introduced by Prof. E. A. Milne into his theory of the structure of the universe, have certain curious biological consequences pointed out in Nature by Prof. J. B. S. Haldane1. Another time-scale has just been put forward by Sir ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/154477a0
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  • 3
    Electronic Resource
    Electronic Resource
    Absolute Magnitudes of Quasi-stellar Radio Sources (1967)
    [s.l.] : Nature Publishing Group
    Nature 213 (1967), S. 133-135 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Absolute magnitudes of quasi-stellar sources, plotted against the logarithms of their red-shifts, fall between two limits. The interpretation of the diagrams varies according to the type of model universe ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/213133a0
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  • 4
    Electronic Resource
    Electronic Resource
    Spherically Symmetric Motions in General Relativity (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 930-931 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The form for the coefficients of the metric is indicated by the formula: ds2 = y2dt2 - R20S2 {ev dr2 + e£/2 (d62 + sin28 d〈 p2)}/c2 (2) where Ro, c are constants, f(r) and S(t) are functions of r and t, respectively, and y, 7], £ are functions of a variable z, which is defined by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210930a0
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  • 5
    Electronic Resource
    Electronic Resource
    Gravitational Collapse (1964)
    [s.l.] : Nature Publishing Group
    Nature 203 (1964), S. 286-287 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I have been able to find a solution of Einstein's equations in which the restriction to zero pressure is removed. Both the pressure and the density are, however, uniform at each instant of time, but both rise to infinite values at the end of the collapse. When this happens the volume of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/203286a0
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  • 6
    Electronic Resource
    Electronic Resource
    The Brain Drain (1967)
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 1149-1150 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-The emigration from Britain of trained scientists and engineers is a matter on which expatriate Britons also reflect. I came to the United States 15 years ago, before the brain drain became fashionable, and have observed the drain mainly from the American end, though I have kept in touch with ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2161149b0
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  • 7
    Electronic Resource
    Electronic Resource
    Further Radio Observations of the First Satellite (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 943-943 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE radio signals from the first Russian Earth satellite were recorded at the University of Illinois Observatory during the period October 5-24 on 40 Mc./s. and on 20 Mc./s. This communication deals with the observations on 40 Mc./s. made with two-element interferometers, one with a north south ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/180943a0
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  • 8
    Electronic Resource
    Electronic Resource
    Hyperbolic Space (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 773-774 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN NATURE of October 9, 1937, under the heading ‘Red shifts and the Distribution of the Nebulæ’, there is repeated a statement of Dr. Hubble's to the effect that hyperbolic space of negative curvature leads to a distance-distribution of nebulæ which is contrary to observation. It is, however, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/140773c0
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  • 9
    Electronic Resource
    Electronic Resource
    A class of spherically symmetric solutions with conformal killing vectors (1987)
    Springer
    General relativity and gravitation 19 (1987), S. 887-898 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Spherically symmetric solutions with a conformal Killing vector in the (r, t) surface allow the null geodesics to be found with relative ease. Knowledge of the null geodesics is essential to calculating the optical properties of a solution via the optical scalar equations. Solutions of this type may be useful for the treatment of the optical properties of an inhomogeneous universe. We first address the question of whether the large class of spherically symmetric solutions found by McVittie possess conformal symmetry. We also investigate the potential for using conformal Killing vectors to aid in the solution of Einstein's Field Equations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00759293
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  • 10
    Electronic Resource
    Electronic Resource
    A point-particle model universe (1982)
    Springer
    General relativity and gravitation 14 (1982), S. 591-608 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The observable cosmos is modeled as a set of point-particles, representing the galaxies, which perturb a dust-filled, Robertson-Walker space-time. The analysis proceeds only to first order inκ=8πG/c 2 and employs a metric suggested by McVittie [General Relativity and Cosmology (Chapman and Hall, London, 1965)], whose original work this paper seeks to develop. Necessary and sufficient conditions are found for the metric to give rise to an energy tensor of a chosen form appropriate to the modeling. In particular, a second-order equation is found which governs a certain time-independent potential. A class of solutions to this equation is established, and the associated singularities of the mass density are shown to be of a Dirac type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00756221
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