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  • Nature Publishing Group  (12)
  • International Union of Crystallography  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 159 (1947), S. 569-569 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the beginning of 1940, a few months before the occupation of Holland by the Germans, we started some neutron experiments in this Laboratory (see ref. 1). To determine neutron energies the well-known boron absorption method was applied. Following Frisch's example2, boron was ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 118 (1926), S. 83-84 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As is known from recent researches, especially in the Davy Faraday Laboratory, X-ray reflection from fatty acids shows the existence of a long spacing, which increases proportionally to the number of carbon atoms in the molecule. Using fatty acid crystals, we have succeeded in observing ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 133 (1934), S. 140-140 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN taking a photometer curve of the 0 → 1 band 1Σ → II (λ = 4835), we observed that in all three branches, P, Q and R, beginning with the same value J = 38 of the upper level, the lines abruptly decrease in intensity to less than half the original value. It seems to us reasonable ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 117 (1926), S. 586-587 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As is well known, X-ray absorption phenomena may be characterised in the following manner: In general the absorption decreases with decreasing wave-length of the X-rays. A sudden increase of absorption, however, takes place at some definite wave-lengths (‘absorption edges’) characteristic for ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 111 (1923), S. 462-463 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN our letter of February 9, which appeared in NATURE of February 24, p. 252, we have shown that the element hafnium, of atomic number 72, detected by us in zirconium minerals, possesses physical and chemical properties quite different from those ascribed to a rare earth element celtium, the ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 111 (1923), S. 252-252 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THROUGH the courtesy of the editor of NATURE we have been able to see an advance proof of the letter of MM. Urbain and Dauvillier (NATURE, February 17, p. 218), and are glad to have the opportunity to add the following comment: Our main reasons for believing that the element celtium, the ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 111 (1923), S. 182-182 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a former letter to NATURE (January 20, p. 79) we announced the discovery of a new element with atomic number 72, for which the name hafnium was proposed. Evidence was given that this element is a homologue of zirconium in accordance with theoretical expectations (Bohr, “Theory of Spectra and ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 111 (1923), S. 79-79 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE Moseley's discovery of the fundamental laws of the X-ray emission, it has become quite clear that the most simple and conclusive characteristic of a Chemical element is given by its X-ray spectrum. In addition, Moseley's laws allow us to calculate very accurately the wave-lengths of the ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 642-642 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the September issue, 1928, of the Physical Review, B. Davis and D. P. Mitchell reported an experimental investigation of the molybdenum Kα-radiation scattered by graphite with the aid of an ionisation spectrometer. In their work it is stated that the normal scattered radiation should have a ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 230-230 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a letter in NATURE of April 27, p. 642, we reported some experiments on the fine structure of the normal scattered molybdenum Kα-radiation. From our photometer curves it is clearly shown that the normal scattered molybdenum radiation from graphite has exactly the same structure as the direct ...
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