Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Wm. Markowitz"'
Autor:
Wm. Markowitz, B. Guinot
AGU American Geophysical Union BIH Bureau International de l'Heure FAGS Federation of Astronomical and Geophysical Services lAG International Association of Geodesy IAU International Astronomical Union ICSU International Council of Scientific Unions
Autor:
Wm. Markowitz
Publikováno v:
Symposium - International Astronomical Union. 128:413-418
SummaryA fundamental dynamical scale, ET(solar), was formed from absolute, meridian circle observations, from 1835 to 1982. At 1967.0 the ET(solar) and SI seconds were equal to 1 part in 109 and, from Morrison's (1979 a) ET(lunar) scale, the ET(ILE)
Autor:
T. Gökmen, G. M. R. Winkler, H. Enslin, A. Orte, G. Hemmleb, D. J. Belocerkovskij, J. D. Mulholland, B. Guinot, P. Melchior, Wm. Markowitz, S. Iijima, H. M. Smith
Publikováno v:
Transactions of the International Astronomical Union. 16:159-173
Autor:
Wm. Markowitz
Publikováno v:
Geophysical Surveys. 1:217-241
Two types of systems of units have been formed. The commercial is a system of weights and measures, such as the metric, defined by civil law. The scientific is a system of physical units generated through use of scientific laws which link correspondi
Autor:
Wm. Markowitz
Publikováno v:
Bulletin géodésique. 59:29-41
A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude
Autor:
Wm. Markowitz
Publikováno v:
Symposium - International Astronomical Union. 11:26-33
Comparison of photographic zenith tube (P.Z.T.) observations with time derived from quartz-crystal clocks during 1951 to 1955 and with cesium standards of frequency during 1955 to 1958 indicates that the seasonal variation is nearly the same from yea
Autor:
Wm. Markowitz
Publikováno v:
Symposium - International Astronomical Union. 32:25-32
The analysis of 66 years of concurrent latitude observations of the ILS shows that the mean pole has a secular motion which consists of a progressive component of about 0′′.0035/yr (10 cm/yr) along the meridian 65°W and a librational component (
Autor:
Wm. Markowitz
Publikováno v:
Symposium - International Astronomical Union. 32:2-9
The hypothesis of continental drift has become of increasing interest to geophysicists in recent years. The IUGG Upper Mantle Committee has stated that the hypothesis of continental drift envisages horizontal displacements of the continents over thou
Autor:
Wm. Markowitz
Publikováno v:
Symposium - International Astronomical Union. 48:162-164
Rotational accelerations of the Earth arise from changes in speed of rotation: periodic, irregular, and secular. Changes are caused by winds, Earth tides, ocean tides, and motions of the core. The semimonthly lunar body tide produces the maximum acce
Publikováno v:
Physical Review Letters. 1:105-107