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Variations of the latent period of vision
Proceedings of the Royal Society of London. Series B - Biological Sciences, 1954Abstract The intensity variation of the latent period of vision was measured in two observers with a binocular method which involved the use of an episcotister. The test stimulus of 3 ms duration subtended at the eye an angle of only 2⋅7'. This made it possible to separate the foveal from the extra-foveal mechanism.
G B, ARDEN, R A, WEALE
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Periodic Insolation Variations on Mars
Science, 1973Previously unrecognized insolation variations on Mars are a consequence of periodic variations in eccentricity, first established by the theory of Brouwer and Van Woerkom (1950). Such annual insolation variations, characterized by both 95,000-year and 2,000,000-year periodicities, may actually be recorded in newly discovered layered deposits in the ...
Murray, Bruce C. +2 more
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Variation in the fetal electrocardiogram with period of gestation
American Journal of Obstetrics and Gynecology, 1963Abstract This study of 105 fetal ECG's through all phases of gestation has localized a significant decrease in ECG voltage reaching its lowest between the twenty-sixth to thirtieth weeks, on the average. Several areas of research to find the cause of the decrease are suggested. These areas are fetal ECG source strength and the electrical conductivity
A F, CAUGHEY, L H, KROHN
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Period variations of the Chandler wobble
Journal of Geodesy, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Variational approach to the periodic solutions problem
Siberian Mathematical Journal, 1984Translation from Sib. Mat. Zh. 25, No.1(143), 106-119 (1984; Zbl 0559.34044).
Perov, A. I. +2 more
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Variational Methods for Periodic Lattices
Physical Review, 1952The problem of finding the propagating solutions of the Schr\"odinger equation in periodic lattices is formulated as a variational principle. This may be used as a starting point to establish the general properties of bands. Furthermore it is shown that by introducing various approximations into the variational principle, the chief existing ...
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Periodic variations in micropulsation dominant period
Physics of the Earth and Planetary Interiors, 1969Abstract Power density spectra of consecutive hourly values of the dominant period of micropulsations in the period range 10 seconds to 200 seconds have been computed in order to detect periodic variations in the dominant period. Three magnetic field variation components and three Earth current components recorded for an interval of 336 hours were ...
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