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  • 1985-1989  (3)
  • 1
    Electronic Resource
    Electronic Resource
    High time-resolution observations of periodic frictional heating associated with a Pc5 micropulsation (1985)
    [s.l.] : Nature Publishing Group
    Nature 316 (1985), S. 528-530 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Perturbations of a, the horizontal geomagnetic component, //, and b, declination, D, at Tromso, Norway during a Pc5 micro-pulsation on 30 November 1982; c, ion velocity fluctuations derived from EISCAT data and resolved in the eastward-perpendicular direction. Frictional heating in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/316528a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The stereoscopic views of Wheatstone and Brewster (1985)
    Springer
    Psychological research 47 (1985), S. 125-133 
    Details
    ISSN: 1430-2772
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Summary The study of stereopsis, made possible by the invention of the stereoscope, freed binocular vision from the yoke of monocular phenomena. Wheatstone used this freedom to determine the factors involved in the perception of size and distance, and interpreted them within a cognitive framework. He devised an adjustable stereoscope which allowed him to apply the systematic experimental procedures of physics to the phenomena of depth perception. Brewster, by contrast, tried to force the newly discovered binocular phenomena back into the mould of monocular vision, using the lever of visible direction. His interpretations of visual phenomena, be they monocular or binocular, could be reduced to the two fundamental ‘laws’ of visible direction and distinct vision. While Wheatstone's cognitive approach influenced Helmholtz, and thereby modern cognitive theorists. Brewster's interpretations, based as they were in analyses of the retinal projection, find an echo in modern direct theorists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309263
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Resolving discrepant results of the Wheatstone Experiment (1985)
    Springer
    Psychological research 47 (1985), S. 135-142 
    Details
    ISSN: 1430-2772
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Summary Soon after Wheatstone published his results obtained with the twelve earliest stereograms. Brewster disputed the result obtained with one of them. This stereogram consisted of a thick vertical line presented to one eye and a thin vertical and thick inclined line to the other. Wheatstone reported seeing depth with this figure but Brewster did not. We conducted three experiments to explore the possible reason for the disagreement. Experiment 1 indicated that the stereogram produces a variety of perceptions including the depth as reported by Wheatstone and the rivalry as reported by Brewster. Experiment 2 showed that Brewster's procedure of keeping the eyes fixed while viewing the stereogram reduces the proportion of subjects reporting depth. In Experiment 3, the top half and the bottom half of the stereogram were presented in different trials. The top of the stereogram that contains no conflicting cues produced reliable depth, but the bottom that does, did not. It is concluded that the difference in the procedures they used and the nature of the stimulus were responsible for the conflicting results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309264
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    Paper (German National Licenses)
    Fulltext
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