【摘要】 本文对利用古代交食记录研究地球自转长期变化这一课题的原理、历史、结果和存在的问题作简单的介绍。对不同作者得到的不同形式的结果作了统一处理,得到三千年来地球自转长期加速度平均值为 =-64.9秒/世纪~2.更多还原

【Abstract】 The principle, history, results and present problems of this subject are introluced briefly. The results in diffrent form from various authors are unified in order to compare to each other. The mean value of the acceleration of the Earth’s rotation is -64.9 s/cy2. The lunar tidal acceleration of - 26’’cy2 is adopted and the fundamental epoch is 1.800.0.更多还原