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  • 1
    Monograph available for loan
    Monograph available for loan
    London : Imperial College Pr.
    Call number: M 97.0469
    Type of Medium: Monograph available for loan
    Pages: x, 329 S.
    ISBN: 186094017X
    Classification:
    C.3.7.
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    London : Imperial College Press
    Call number: M 17.91136
    Type of Medium: Monograph available for loan
    Pages: X, 381 S , zahlr. graph. Darst , 23 cm
    Edition: Reprinted
    ISBN: 1860940269
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Singapore [u.a.] : World Scientific
    Call number: M 17.91135
    Type of Medium: Monograph available for loan
    Pages: XVI, 479 S. , Ill., graph. Darst. , 24 cm
    Edition: Rev. ed.
    ISBN: 1848168950 (pbk. : £45.00) , 9781848168954 (pbk. : £45.00) , 1848168942 (hbk. : £84.00) , 9781848168947 (hbk. : £84.00)
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 1876-1878 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present observations of unusual oscillatory behavior of Si diodes at low temperatures. The oscillations observed are stable, highly reproducible and obey a frequency-current relation that is linear over nearly eight decades in current strength allowing for precision measurement of currents over the whole range down to picoampere currents. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Solar physics 187 (1999), S. 59-75 
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Radio-silent γ-ray flares are solar flares that lack any significant emission in the (non-thermal) radio wave band during their impulsive hard X-ray and γ-ray emission phases. Flares with extremely suppressed long-wavelength spectra have previously been reported by White et al. (1992) and have been discussed in different context by Hudson and Ryan (1995). A striking example of a radio-silent flare was observed by SMM during the onset of the 6 March 1989 energetic γ-ray flare. We argue that the absence of radio emission at wavelengths longer than microwave wavelengths is an indication of the compactness of the flare rather than that the flare did not exhibit non-thermal properties. Probably the flare site was restricted to altitudes above the photosphere in a newly emerging loop configuration lower than the equivalent altitude corresponding to an emission frequency of 1.4 GHz. This implies the presence of a dense and highly magnetized closed field configuration confining the electron component which causes the impulsive γ-ray continuum. Reconnection in such a configuration did not lead to open magnetic fields and streamer formation. Acceleration of particles in the γ and hard X-ray bursts was restricted to closed field lines. Thermal expansion of the loop system may subsequently lead to the generation of radially propagating blast waves in the solar corona which are accompanied by type II solar radio bursts and decimetre emissions. The emission during the onset of the flare was dominated by a continuum originating from electron bremsstrahlung at X-ray and γ-ray energies with only little evidence for the presence of energetic ions. It is, therefore, concluded that energetic electrons have been primary and not secondary products of the particle acceleration process.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 198 (1992), S. 71-77 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We examine the hypothesis of the connection between quasars and galaxies from the point of view of the theory of nonlinear dynamics of highly complex systems. It is found that complexity and nonlinearity of systems which are informationally disconnected may lead to different intrinsic time-scales of the systems. Systems with different intrinsic time-scales age at different rates. This kind of aging can be measured by observing their different redshifts. On interpreting strongly differing redshifts of astrophysically closely related objects as informational redshifts, we are in the position to determine their maturity ratios which are measures of the different nonlinear stages of the objects on the cosmological time-scale.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 201 (1993), S. 135-147 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Information in the universe evolves according to a nonlinear law, which results from a combination of nonlinear dynamics and quantum theory. The Kolmogoroff-Sinai entropy rate of the Universe evolves in inverse proportion to the temperature. Since the evolution of temperature is known from standard cosmology, the time dependence of the universal entropy rate can be determined and the temporal evolution of the universal information content can be calculated. Information starts growing at the enormous rate of 1044 bits per second from an initial value of at least 2π (seven) bits at Planck time. However, it reaches its contemporary value only if one or more inflationary phases have been passed by the Universe in the course of its evolution.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of theoretical physics 34 (1995), S. 435-442 
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A model for a noncontinuous spacetime is considered, which is based on a generalization of the manifold concept, known as d-space. As a consequence of its construction, the model possesses a metric of Lorentzian signature and a generalized form of Lorentz invariance. The model may be considered as defining a class of discrete spacetimes within the framework of the d-space representation of general relativity.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of theoretical physics 38 (1999), S. 1423-1428 
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We revisit the path integral description ofmotion of a relativistic electron. Applying a minor, butwell-motivated conceptional change to Feynman'schessboard model, we obtain exact solutions of the Dirac equation. The calculation is performed by meansof a particularly simple method different from both thecombinatorial approach envisaged by Feynman and itsIsing model correspondence.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal for general philosophy of science 22 (1991), S. 143-153 
    ISSN: 1572-8587
    Keywords: Concepts of knowledge ; science and discovery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Summary Why was nuclear fission discovered under the repressive conditions of the Third Reich and not in one of the other leading countries in science? The attempts to answer this question leads to the formulation of the hypothesis that under the very special constellation of the working relations between Hahn and Meitner, the forced emigration of Meitner was advantageous insofar as it emancipated Hahn from the physical guardianship of Meitner, and liberated his chemical competence. This was a prerequisite to recognizing the presence of Barium in the debris of Uranium decay. At the same time it liberated Meitner so that she could break with the old physicalconcepts of knowledge when accepting Hahn's chemical results, and find the correct interpretation of the experiment. Moreover, Hahn's and Strassmann's inner emigration which kept them away from participating in political activities and engagements, as well as their abstinence from competing in fashionable research (which was stimulated by the increasing political isolation of Germany) helped them to concentrate on their more restricted investigations following unfashionable lines of thinking and were among the favourable conditions for making their great discovery.
    Type of Medium: Electronic Resource
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