... 347351 (1997) ASTRONOMY AND ASTROPHYSICS The solar eclipse observed by Clavius in A ... The careful description of the solar eclipse of A.D. 1567 by Clavius is used to ...
... Using these data we then estimate the solar longitudes for each return for which significant activity occurred and the approximate time of peak activity. ...
... it calculated and displayed celestial information, particularly cycles such as the phases of the moon and a luni-solar calendar ... Calendars were important to ancient societies10 for timing agricultural activity and fixing religious festivals. ...
... T.M.L.Wigley, P.M.Kelly, Holocene climatic change, 14 C wiggles and variations in solar irradiance . ... Chronology of Vesuvius' activity from A.D. 79 to 1631 based on archaeomagnetism of lavas and historical sources. ...
... I disagree completely with the author in his judgement of Ptolemy as a deliberate criminal in his activity as an astronomer ... of publications from the period 1969-76 Newton has investigated the non-gravitational accelerations within the solar system ...
... made of climatic indications from tree-ring records; these are archives of volcanic activity because of the deleterious effect on worldwide climate through shielding of solar radiation by dust in the atmosphere, leading to abnormal annual growth rings in ...
... The increasing activity of antiquarian research induced the expectation that the ... 2) The first eclipse was solar. ... 3) The second eclipse was solar, (4) The third eclipse was lunar. ...