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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 1010-1011 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A new type of cathode combining the features of the impregnated W cathode and the moulded cathode has recently been developed. The cathode is made by preparing a mixture of nickel powder and barium-strontium carbonate powder. A small percentage of an appropriate reducing agent is added to the ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 200-201 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is sufficient for our purpose to write the dynamical laws in the form with Tik = (Jt0c2 . Ui . uk ; 8* = PO . wk, File being the electromagnetic field tensor, M.O and p0 the rest densities of mass and charge distributions and uk and w* the velocity four-vectors of mass and charge ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 132 (1933), S. 967-967 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE recent development of Dirac's theory of the electron has made it possible to compare the radioactive β-transformation with a process in which a pair of differently charged electrons is produced in the neighbourhood of the nucleus, the positive of which is captured in order to increase the ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 125 (1930), S. 458-458 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] EXPERIMENTS by Rutherford show anomalies in the scattering of α-particles in a certain range of velocities for light elements. Similarly, the scattering of electrons by atoms shows anomalies for small velocities, as was discovered by Ramsauer. Both effects can be treated in a similar way by ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 133 (1934), S. 722-722 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE artificial production of radioactive isotopes recently discovered1 has to be brought into connexion with the theoretical treatment of the β-type of radioactive transformation2. It is easily seen that the formulæ given for the (β-decay of heavy elements apply to ...
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  • 6
    Publication Date: 1933-04-01
    Description: Seven beads were found, details of which are given below:—Bead No. 1.—Pale cobalt-coloured annular glass bead. Weight, 5·21 g.; sp. gr., 2·412. There are two varieties of this bead which are very similar: one is of the La Tene period, and the other is Saxon. There has been a small difference of specific gravity in practically all the specimens I have examined, but it is so slight that I do not think it is safe to trust as a means of dating them. At the same time it has been fairly consistent, as in twelve specimens from different sites dated to the early period in Britain, France, and the Mediterranean the specific gravity has been below 2·46, and the only other early specimen I have tested was 2·485. On the other hand, all the beads that I have tested which I know to be Saxon have a specific gravity of 2·485 or over. I have, however, recently seen a bead from Lincolnshire with the same specific gravity as this No. 1, which, I think, is probably Saxon. Blue annular Saxon beads of this type, but usually smaller, are more common in the eastern counties than in any other part of England.
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
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