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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 127 (1931), S. 441-441 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE current argument against Helmholtz's contraction hypothesis concerning the origin of the sun's heat may be summarised as follows. The gravitational potential at a point within the sun is of the order of magnitude of its value at the surface, 2 × 1015 c.g.s. units. Thus ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 118 (1926), S. 374-374 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN NATURE of August 21 Dr. L. C. Jackson quotes Wentzel as having supposed a force ... to act on a magnetic electron with moment μ moving with velocity v in electric field X (c is the velocity of light). He deduces from (1) that Kaufmann's experiment shows that the electron cannot have a ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 166-166 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BOTH Prof. Appleton and Dr. van der Pol have suggested in letters in NATURE of Dec. 8 that the echoes observed by Prof. Størmer with delays of about ten seconds might be explained by the disturbance spending a long time in a region containing so many electrons per c.c. that the group velocity ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 117 (1926), S. 514-514 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a letter published in NATURE of February 20, p. 264, Messrs. Uhlenbeck and Goudsmit have shown how great difficulties which atomic theory had met in the attempt to explain spectral structure and Zeeman effects, can be avoided by using the idea of the spinning electron. Although their theory ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 255 (1975), S. 710-712 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Lungs from freshly slaughtered calves were washed out with phosphate buffered saline (PBS) and the resulting cell suspension centrifuged at 500# for 20 min. The cell pellet was suspended at about 107 cells ml"1 in Eagle's Basal Medium containing 2% heated foetal calf serum (BMS). This preparation ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 622-622 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AN equation representing the temperature variation of the viscosity (η) of water and lime soda glass has just been published by Douglas1, namely, ... where A′, B′ C′ and D′ are constants, and T the absolute temperature. I have recently shown2 that for non-associated ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 365-366 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT was pointed out by Porter1 that, for mercury and water, the logarithm of the viscosity is a linear function of the logarithm of the vapour pressure. I propose a modified relationship introducing the critical pressure pc, namely ... where φ is the fluidity of a ...
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 23 (1983), S. 99-113 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hilbert space may be regarded as a convenient standard approximation by interpolation and extrapolation to a unitary space, in general decomposable into a sum of semisimple spaces. In the limit we expect a particle theory expanded in powers of h according to the number of interacting particles. In the classical limit h tending to zero, phase space, with equations of motion reducible to Hamiltonian form, replaces Hilbert space. The modification of states by observing them is taken care of by considering probability distributions of petty ensembles. If the equations for any single observer can be made autonomous by replacing empirical time by universal time with an arrow we have a causal system. We then obtain the relation between probability and negentropy required for the second law of thermodynamics. An approximate Newtonian theory provides proximate particles with internal and external variables and admits the Poincaré group. For the internal variables we have approximately the Breit interaction. For the external variables we have equivalence for observers of the homogeneous Lorentz group of relativity. We introduce grand ensembles of ultimate particles, and nebulae as proximate particles in the large. We assume the Einstein principle of equivalence for the ten parameter set of observers suggested by relativity and suppose the second law of thermodynamics holds for each observer. The Einstein law of gravitation follows in classical theory to the order of the reciprocal of the large constant, in general with positive natural curvature as well as that corresponding to mass. Replacing particle interactions by fields we include them in classical theory.
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  • 9
    Publication Date: 1953-06-01
    Print ISSN: 0031-899X
    Electronic ISSN: 1536-6065
    Topics: Physics
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  • 10
    Publication Date: 1952-06-01
    Print ISSN: 0031-899X
    Electronic ISSN: 1536-6065
    Topics: Physics
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