Medieval Chronicles and the Rotation of the Earth
The main purpose of this work is to obtain and assess a large body of observations of solar eclipses from medieval records (roughly the period from 400 to 1200), and to use the observations in improving our knowledge of the motion of the solar system. Catalogues of various types of data are given in the appendices including but not limited to lunar eclipses, comets, novae, famines, and earthquakes.
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BACKGROUND AND PURPOSES OF THE WORK
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ANNALS CHRONICLES AND HISTORIES
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6th hour according annalist annals appeared assigned assume astronomical Bede believe bout calculations calendar calends called century Chapter Christian Chronicle church cited close compiled Conclusions contains contemporaneous continuation copied correct described detail discussion early Easter edition editor entry equinox error example fact feria German give given happened Hence hour identified independent interesting Italy known later lipse lists lunar eclipse magnitude means medieval mentioned monastery month moon needed nones notes notice observation occurred original perhaps period person Place possible probably reason record Reference Reliability Roman says Section seems seen Sigebertus solar eclipses Standard deviation stars suggests TABLE taken tion translation Ulster usually writing written wrote