国产高清av首播原创麻豆_麻豆黄色网_成人AV毛片无码免费网站_久色精品_国产色精品_国产成人无码aa片免费看

position: EnglishChannel  > InnovationChina> Shoushi Calendar:A Masterpiece of Ancient Calendars

Shoushi Calendar:A Masterpiece of Ancient Calendars

Source: Science and Technology Daily | 2023-07-27 14:21:02 | Author: ZONG Shihan


?By?ZONG?Shihan


The sunset coincides with the Beijing Ancient Observatory. (PHOTO: VCG)

A calendar serves as a means of measuring time based on astronomical phenomena. The lunar calendar follows the moon's orbit around the earth, while the solar calendar aligns with the sun's seasonal positions. The traditional Chinese calendar belongs to the lunisolar calendar, harmonizing the relationships between the sun, the moon, and the earth, while the globally recognized Gregorian calendar is a solar calendar.

The Xia calendar is the earliest known calendar in China. In the Northern Song Dynasty (960-1127), Shen Kuo proposed a groundbreaking change in calendar usage with the introduction of the Twelve Qi Calendar, which shares similarities with the current Gregorian calendar.

The Shoushi Calendar, compiled by renowned scientists Guo Shoujing, Wang Xun and others from 1276 to 1281, is a comprehensive collection of the traditional Chinese calendar and holds the distinction of being the longest-lasting calendar in ancient China.

This Calendar's value can be attributed to its remarkable accuracy. Firstly, it defines a tropical year as 365.2425 days, differing by only 25.92 seconds from the Gregorian calendar and predating it by over three centuries. Secondly, advancements include a decreasing length of the tropical year over a century, as discovered by earlier scholars, with a reduction of 0.0001 days. Additionally, the Shoushi Calendar employs innovative calculations, utilizing formulas by Shen Kuo for converting ecliptic longitude, right ascension, declination, and employing cubic interpolation to calculate celestial degrees. This precise calendar fostered productivity and improved living standards during its time.

The influence of the Shoushi Calendar extended beyond China and received recognition by Japan, Korea, and among astronomers worldwide, who conducted extensive research on its principles. While the Gregorian calendar is prevalent in modern society, the Shoushi Calendar continues to impact traditional festivals and agricultural production, leaving a lasting legacy.


Editor:龍云

Top News

Forging a Resilient Economy with Sci-tech Power

Tiangong Ultra, developed by the Beijing Humanoid Robot Innovation Center, won the world's first half-marathon for humanoid robots in Beijing on April 19, demonstrating the prospects of China's humanoid robot industry and the epitome of the country's strategic emerging industries and future industries. These industries are surging ahead, facilitating the construction of a resilient economy with sci-tech force.

抱歉,您使用的瀏覽器版本過低或開啟了瀏覽器兼容模式,這會影響您正常瀏覽本網頁

您可以進行以下操作:

1.將瀏覽器切換回極速模式

2.點擊下面圖標升級或更換您的瀏覽器

3.暫不升級,繼續瀏覽

繼續瀏覽
主站蜘蛛池模板: 国产精品成人无码久久久 | 亚洲免费三区一区二区 | 色综合天天爱 | 久久免费孕妇高潮视频 | 国产精彩自拍视频在线 | 欧美日韩国产色综合视频 | 女女同性AV片在线播放免费 | 丰满无码人妻热妇无码区 | 西西444WWW无码视频软件 | 亚洲精品久久久久午夜福禁果Tⅴ | 97精品在线观看 | 中文字幕一区二区免费 | 欧美男女日b视频 | 免费中午字幕无吗 | 国产中日韩久久久噜噜久久 | 亚洲国产最新 | aaa一区| 成人午夜亚洲精品无码55 | 色视频一区 | 国产91精品久久久久久久网曝门 | 国产一区二区三区免费播放 | 亚洲国产区 | 久久久蜜桃一区二区人 | 国产乱码精品一区二区三区中文 | 欧美丝袜一区二区三区 | 亚洲午夜福利在线观看老司机 | 国产精品sm在线观看 | 91九色国产ts另类人妖 | 成人精品免费网站 | 日韩视频在线播放 | 日韩精品一区二区亚洲A∨观看 | 丫丫色 | 91精品国产高清久久久久久 | 亚洲第一色区 | 337p日本大胆欧美人 | 日本精品久久久久 | 国产精品1024在线永久免费 | 国产成人av观看 | 99国产一区二区精品久久 | 黄动漫在线免费观看 | 国产蜜月一区二区三区在线看 |