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  • 1955-1959  (3)
  • 1930-1934  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 4 (1956), S. 0 
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: This paper describes the measurement of the Earth's total magnetic field by a determination of the frequency of free precession around this field of the protons in a sample of water. The angular frequency of precession, ω, is related to the field F by the relationship ω=γpF where γp is the gyromagnetic ratio of the proton.A bottle of water is magnetised in a direction approximately at right angles to the earth's field, by passing a current through a coil wound around the bottle. The current is switched off rapidly, leaving the magnetic moment vector to precess around the earth's field direction, inducing in the coil a small alternating voltage. This voltage is amplified and its frequency measured by means of a counter. The accuracy of measurement of the total field is estimated at ± 0.5γ.In addition to the total field value, the form of the signal voltage contains information on the field gradient across the sample.Simple theory, experimental details and results are given.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1652-1653 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recent article Sir Julian Huxley1 made "in passing" a plea for a rational time unit and himself proposed the "cron" : equivalent to a million years and to be modified by the usual metric multiples and sub-multiples (for example, one millieron would signify a millennium). This certainly ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    The @Cambridge law journal 4 (1931), S. 164-173 
    ISSN: 0008-1973
    Source: Cambridge Journals Digital Archives
    Topics: Law
    Notes: The relationship between the Dominions and the Crown and the Imperial Parliament presents questions of great difficulty. At the present time the Dominions are, just as the Colonies, subject to the legal—though not to the political—supremacy of the Imperial Parliament, the Parliament of the United Kingdom. Though this supremacy has for many years not been exercised positively, i.e. by the passing of Acts affecting a Dominion, except at the request of such Dominion, e.g. at the request of Canada to amend the British North America Act, 1867, yet it still exists, inasmuch as there are in force Acts of the Imperial Parliament (especially the Acts creating the Dominion Constitutions) which apply to the Dominions, and the courts would be compelled to hold any Dominion legislation conflicting with such Acts to be inoperative.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 552-553 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It had already been found that there was a difference between the faeces of the two animals when E. Brauwer and E. J. v. Weerden1 published their investigations on the osmotic pressure of the gut contents of grades. We then determined freezing-point depressions and dry matters of the contents of ...
    Type of Medium: Electronic Resource
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