Results 261 to 270 of about 8,002,154 (311)

Period variations in BZ Eridani?

Astrophysics and Space Science, 1987
Recent claims that strong period variations are indicated in the O−C diagram of the eclipsing binary BZ Eri are shown to be based on a gross overestimation of the accuracy of photographic and visual times of minima. There is no evidence for any period change within the last fifty years.
exaly   +2 more sources

Variations of the latent period of vision

Proceedings of the Royal Society of London. Series B - Biological Sciences, 1954
Abstract 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
openaire   +3 more sources

Periodic Insolation Variations on Mars

Science, 1973
Previously 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., Ward, William R., Yeung, Sze C.   +2 more
openaire   +3 more sources

Period variations of the Chandler wobble

Journal of Geodesy, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

Variation in the fetal electrocardiogram with period of gestation

American Journal of Obstetrics and Gynecology, 1963
Abstract 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
openaire   +2 more sources

Variational approach to the periodic solutions problem

Siberian Mathematical Journal, 1984
Translation from Sib. Mat. Zh. 25, No.1(143), 106-119 (1984; Zbl 0559.34044).
Perov, A. I., Smagina, T. I., Khatskevich, V. L.   +2 more
openaire   +2 more sources