摘要
中国古代历法中的月食时差算法是为了修正定望和食甚时刻之间的时间差而设计的。该算法为《大衍历》所首创,此后,《钦天历》、《纪元历》、《庚午元历》和《授时历》等历法均设计了相应的算法。通过构造月食时差算法的理论模型,证实月食时差算法是必要的,中国古代历法中设计的月食时差算法应该与月亮视差无关,由此反驳了朱载堉对《纪元历》等历法中的月食时差算法的批评。
The Shicha of lunar eclipse is a difference between moments of full moon and middle eclipse. The first algorithm designed for Shicha is found in Yixing's Dayan li (a calendar-making system of Dayan, 724). In some calendar-making systems in the Song and Yuan Dynasties, such algorithms are also found. Scholars, such as Zhu Zaiyu, considered that Shicha of lunar eclipse in aneient China was a eorrection of the moon parallax. Since the moon parallax has nothing to do with the lunar eelipse, the Shieha algorithm has been taken as a meaningless method, and critieized by historians of astronomy. According to a constructed theoretical model of Shicha of lunar eclipse, a eonelusion shows that it is necessary to calculate the Shicha of lunar eclipse, and the Shicha algorithm in ancient China is not designed for the correction Caused by the moon parallax.
出处
《自然科学史研究》
CSCD
北大核心
2008年第3期301-308,共8页
Studies in The History of Natural Sciences
基金
国家自然科学基金(项目编号:10771169)
陕西省教育厅科研资助(项目编号:07JK423)
西北大学数学与科学史中心“历法讨论班”的成果之一
关键词
中国历法
月食食甚
月亮视差
时差
Chinese calendar, lunar eclipse, the moon parallax, middle eclipse, Shicha
作者简介
曲安京,1962年生,山东牟平人,西北大学数学与科学史研究中心教授,主要研究方向为精密科学史;
唐泉,1974年生,甘肃靖远人,西北大学中国思想文化研究所博士后,咸阳师范学院数学系讲师,主要研究方向为数理天文学史。