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  • 1
    Digitale Medien
    Digitale Medien
    An Estimate of the Peak Sunspot Number in 1968 (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 462-462 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] It has been suggested that the uninterrupted rise in successive peak sunspot numbers since 1928, and its culmination in the unprecedented high peak of 1958, may indicate that the Sun is undergoing a long-term change and that the next peak, which will probably occur in about 1968, will be even ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/186462b0
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  • 2
    Digitale Medien
    Digitale Medien
    Ionosphere, and X-ray Images of the Sun (1965)
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 476-476 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] These directly made photographs provide at least qualitative confirmation of the solar brightness distribution derived by me3 from ionospheric observations made during the previous solar minimum in 1954. This distribution was based on measurements of the changes in electron density, in the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/208476a0
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  • 3
    Digitale Medien
    Digitale Medien
    Similarities in the Characteristics of Solar Radiation at γ 10.7 cm. and in the Far Ultra-violet (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1796-1796 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We have recently examined the characteristics of a number of indices of solar activity including both CJiE, calculated using flayer data for Slough (England), and D. We have confirmed that the correlation between the two indices is high (r = 0-90), but we have also found that it is even higher if ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/1811796a0
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  • 4
    Digitale Medien
    Digitale Medien
    Solar Activity and the Ionosphere (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 543-544 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The recent unprecedented high levels of solar L activity, as indicated by sunspot numbers and described by Dr. M. A. El son1, have been accompanied by equally exceptional conditions in the ionosphere. During the sunspot cycle there is no appreciable change in the amount of visible light or heat ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/181543a0
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  • 5
    Digitale Medien
    Digitale Medien
    Solar-Flare Effect in the F 2-Layer of the Ionosphere (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 690-691 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A similar, but even more intense, flare occurred on February 23, 1956, and a simultaneous increase in.F2-layer ionization at Okinawa has bean reported by Shapley and Kneeht2. Since increases of about the same magnitude occurred on other days, and since no simultaneous increases were observed at ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/181690a0
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  • 6
    Digitale Medien
    Digitale Medien
    The Ionosphere During the Solar Eclipse of February 25, 1952 (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 1137-1138 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DURING the past twenty years, an intensive study has been made of the response of the ionized layers of the earth's upper atmosphere to changes in the intensity of the solar radiation incident on them. Most of the existing fund of knowledge on this subject has been built up from observations of the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/1741137a0
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  • 7
    Digitale Medien
    Digitale Medien
    Interpretation of Ionospheric Measurements made during Solar Eclipses (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 33-34 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fortunately the interdependence of I and a suggests the possibility of using a method of finding a which makes no arbitrary assumptions about I. If ionospheric measurements are made during the same eclipse at two stations, it ought to be possible, in principle, to express the intensity of a given ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/178033b0
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  • 8
    Digitale Medien
    Digitale Medien
    Brightening of the Solar Limb in the Far Ultra-Violet (1955)
    [s.l.] : Nature Publishing Group
    Nature 176 (1955), S. 652-653 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The eclipse of June 30, 1954, coincided with a period of extremely low solar activity, and the astronomical data suggest that the Sun's disk was almost completely devoid of any features indicating the existence of even local centres of activity. Measurements of electron density were made at ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/176652a0
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  • 9
    Digitale Medien
    Digitale Medien
    Moving Striations (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 436-436 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WE have recently completed an investigation of the spectra of moving striations in the positive column of some glow discharges. Briefly, the method consists in forming an image of the positive column along the slit of a spectrograph, and covering and uncovering the latter by a mechanical ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135436b0
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  • 10
    Digitale Medien
    Digitale Medien
    E Region during the Solar Eclipse of February 25, 1952 (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 453-453 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Substituting this in equation (1), we can write: (3) (1) Change in J = q'a' cos x during total eclipse, calculated from 7?-region measurements. (2) Difference between J derived from jE-region measurements and from intensity distribution of coronal line 5303 A. On the right, cos x is known, and N ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/170453a0
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