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  • Nature Publishing Group  (33)
  • 1935-1939
  • 1930-1934
  • 1925-1929  (33)
  • 1929  (33)
  • 1
    Digitale Medien
    Digitale Medien
    Action of Low Velocity Electrons on Micro-Organisms (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 983-984 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THAT ultra-violet light has a definite lethal action on certain micro-organisms is well known. The nature of this lethal action is being studied extensively, but hitherto (so far as is known) no work has been done to determine the action of low velocity electrons of known energy on ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124983a0
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  • 2
    Digitale Medien
    Digitale Medien
    Lethal Action of Ultra-Violet Light on Micro-Organisms in a High Vacuum (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 693-693 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN comparing the action of low velocity electrons on micro-organisms with that of ultra-violet light, the question arose as to what the action of ultraviolet light on micro-organisms in a very high vacuum would be. It was rather expected that the lethal action in vacuo and in air might be ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124693a0
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  • 3
    Digitale Medien
    Digitale Medien
    The Comma Butterfly in England (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 653-653 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DR. DAWE'S observation serves to direct attention to a matter that is of considerable interest to students of the Lepidoptera of the British Isles in connexion with the distribution of Polygonia c-album. It is not an isolated one, for in 1928 a single example of the same species was noted in a ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124653b0
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  • 4
    Digitale Medien
    Digitale Medien
    Dr. Augustus Waller and Patents (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 654-654 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN the “Calendar of Patent Records”, page 562, NATURE, Oct. 5, it is stated that Dr. Augustus Waller patented, in 1852, a means for measuring the quantity of alcohol in liquors; “but” (quoting from the paragraph in NATURE) “his most important invention—the cardiograph … was not patented”. ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124654b0
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  • 5
    Digitale Medien
    Digitale Medien
    Ionisation Potentials and Conductivities of Metals (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 512-513 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ON the hypothesis of the existence of ‘free electrons’ in metals, Drude, Lorentz, and recently Sommerfeld have explained the Wiedemann and Franz law, namely, that the ratio of the thermal and electrical conductivity is the same for all metals, and is proportional to the absolute temperature. In ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124512c0
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  • 6
    Digitale Medien
    Digitale Medien
    Mimicry (1929)
    [s.l.] : Nature Publishing Group
    Nature 124 (1929), S. 183-183 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] PROF. MACBRIDE's reply to my criticisms of his views on mimicry, which appeared in NATURE of May 11, has just reached me. Before this letter reaches England others may have dealt with this, but I would ask indulgence for a few remarks. (1) It is to be regretted that opponents of the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/124183b0
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  • 7
    Digitale Medien
    Digitale Medien
    Quantum Geometry (1929)
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 838-838 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DIRAC'S wave equation for the electron involves a Hamiltonian linear in the momenta pk. This fact seems to be of geometrical nature and suggests the introduction of a linear fundamental differential form ... with matrix coefficients yk in geometrical ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/123838c0
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  • 8
    Digitale Medien
    Digitale Medien
    The Constitution of Oxygen (1929)
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 761-761 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DR. F. W. ASTON has remarked (NATURE, 123, 488; Mar. 30, 1929) that he finds no positive ray evidence for the existence of isotopes of oxygen, and he states that if 018 exists, as concluded by Giauque and Johnston (NATURE, 123, 318; Mar. 2, 1929), it must be in a ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/123761a0
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  • 9
    Digitale Medien
    Digitale Medien
    Insects Flying to Ships (1929)
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 528-528 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ALL those who have travelled about the world in recent years must have noticed the insects which fly to ships at anchor, attracted by the bright electric lights. Some years ago I secured a most interesting series (including a new species of moth) off the coasts of Chile and Peru, and in many ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/123528a0
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  • 10
    Digitale Medien
    Digitale Medien
    Spectrum of Doubly Ionised Krypton (1929)
    [s.l.] : Nature Publishing Group
    Nature 123 (1929), S. 244-244 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE spectrum of doubly ionised krypton has been under examination by me for some time past. It seems evident that the strong group of lines about the wave-length 3250 belong to Kr++. A preliminary attempt has revealed a number of regularities. I give below three sets of terms A, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/123244c0
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