Historical Eclipses and Earth's Rotation
The culmination of many years of research, this book discusses ancient and medieval eclipse observations and their importance in studying Earth's past rotation. This is the first major book on this subject in twenty years. The author has specialized for many years in the interpretation of early astronomical records and their application to problems in modern astronomy. The book contains an in-depth discussion of numerous eclipse records from Babylon, China, Europe and the Arab lands. The author provides translations of almost every record studied. He shows that although tides play a dominant long-term role in producing variations in Earth's rate of rotation--causing a gradual increase in the length of the day--there are significant and variable nontidal changes in opposition to the main trend. This book is intended for geophysicists, astronomers (especially those with an interest in history), historians and orientalists.
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a historical perspective
2 Tidal friction and the ephemerides of the Sun and Moon
3 Pretelescopic eclipse observations and their analysis
4 Babylonian and Assyrian records of eclipses
5 Investigation of Babylonian observations of solar eclipses
6 Timed Babylonian lunar eclipses
8 Chinese and other East Asian observations of large solar eclipses
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al-Battani al-Biruni Almagest annular Arab Babylon Babylonian Baghdad Cairo calculated calendar century Ch’ang-an ch’ou chap chapter Chinese chronicle Combining these limits Computed TT derived dynasty Earth eclipse observations eclipse occurred eclipse records equation Equivalent LT estimated ﬁgure ﬁngers ﬁrst contact ﬁrst day h after sunset Hence LT Hipparchus horizon Huber Ibn Yunus interval Julian Julian calendar Kalendas LBAT Lo-yang longitude LT of contact LT of ﬁrst LT of moonrise LT of moonset LT of sunset lunar diameter lunar eclipse maximum phase measured medieval mid-eclipse month Moon Moon rose moonrise Nabonassar night obscured partial eclipse place of observation Ptolemy reign period reported RESULTS For totality seasonal hours set eclipsed solar altitude solar and lunar solar eclipse speciﬁcally stars Stephenson Sun was eclipsed tablet total eclipse trans Treatise