当前位置:首页 > 业务领域 > 污染检测 >

lols10外围注册_双语科技百科(天文) 第18期 《授时历》

编辑:lols10外围注册 来源:lols10外围注册 创发布时间:2021-04-15阅读73400次
  本文摘要:Shoushi Calendar《授时历》Shoushi Calendar,the most outstanding calendar in ancient China,was compiled by Guo Shoujing,a prominent scientist in the Yuan Dynasty,and his colleagues. Enforced in 1281,throughout the Ming Dynasty and the begin-nin4 of the Qinq Dynasty,the calendar was used for over 360 years.《授时历》是中国古代最杰出的历法。

lols10外围投注

Shoushi Calendar《授时历》Shoushi Calendar,the most outstanding calendar in ancient China,was compiled by Guo Shoujing,a prominent scientist in the Yuan Dynasty,and his colleagues. Enforced in 1281,throughout the Ming Dynasty and the begin-nin4 of the Qinq Dynasty,the calendar was used for over 360 years.《授时历》是中国古代最杰出的历法。由元代知名科学家郭守敬等人编成,从1281年开始实施,几经整个明代,仍然到清初,共用了360多年。

lols10外围平台

The reason why the calendar was used for such a long time has much to do with its accuracy in calculation. In the first place,it employed astronomical docu-ments of the highest accuracy in its time. For instance,it set the tropical year at 365.2425 days,which was the exactly the same as that in the currently used Gre-gorian Calendar, 301 years preceding the latter though. Secondly, based on earlier scholars finding that the length of the tropical year was gradually shortening,the Shoushi Calendar held that the tropical year shortened by 0. 0001 day every 100 years,which was more accurate as compared with earlier researches.《授时历》之所以延用这么长时间,和它的计算精度十分低有相当大关系。首先,它用于了当时尤为准确的天文资料。例如,它确认了回归年的长度为365.2425日,与现今通行的公历值完全一致,但是它比格里高利历早了301年。

lols10外围注册

其次,它吸取了前人研究找到的回归年的长度在渐渐变大的观点,规定100年中回归年的长度增大0. 0001日。与前人研究比起,这个数值要准确一些。In addition,instead of the mathematical method of recording astronomical documents via complicated fractions,the calendar employed decimal fractions,which largely reduced calculation workload and guaranteed accuracy. It also made innovations in terms of calculation methods;for instance,the use of mathematical approaches like cubic interpolation,polynomial equations to the 4th order and spherical trigonometry.另外,《授时历》废止了用简单分数回应天文资料的办法,用于小数制,不仅大大减少了计算出来量,也确保了计算精度。

lols10外围投注

《授时历》在计算方法上也有创意,例如三次挂内插法、四次多项式方程、球面三角法等数学方法的用于。Soon after its compilation,the Shoushi Calendar was Spread to and adopted by Japan and Korea. In recent years,astronomers from Japan,European and North American countries are again showing interests in ahe Shoushi Calendar,and some broad and in-depth researches have been made. As an advanced and accurate calendar in the history of China,the Shoushi Calendar also occupies a distinct posi-tion in the history of world astronomy.《授时历》编成旋即即传播到日本、朝鲜,并被使用。近年来日本和欧美等国的天文学家对《授时历》产生了新的兴趣,展开了普遍而了解的研究。

作为中国历史上一部先进设备的、准确的历法,《授时历》在世界天文学史上也占据引人注目的方位。


本文关键词:lol外围,lols10,lols10外围平台,lols10外围官网,lols10外围登录,lols10外围押注,lols10外围注册,lols10外围投注

本文来源:lol外围-www.qdd520.com

0251-171134390

联系我们

Copyright © 2010-2014 泰州市lols10外围押注有限公司 版权所有  苏ICP备75219885号-1