For faster navigation, this Iframe is preloading the Wikiwand page for
落下闳.
落下闳(前156年—前87年)复姓落下,名闳(音同"宏"),字长公,巴郡阆中(今中国四川省阆中市)人,中国古代西汉时期的天文学家,太初历的主要创立者。渾天說創始人之一。
早年隐居于民间。当时广泛推行的是秦朝制订的颛顼历,其特点是以十月为每年的第一个月,九月为最后一个月,按照冬、春、夏、秋的顺序排列四个季节。这种历法虽然与实际天象比较符合,但是给农业生产带来众多不便。汉武帝元封六年,邓平、唐都、落下闳等多位天文学家被征召至长安创立新的历法,于太初元年(公元前104年)创立了中国古代第一部有完整的文字记载的新历—太初历。[1]。落下闳等人创立的太初历重新确定了春、夏、秋、冬的顺序,以孟春正月朔日为一年的开始,这也是中国春节的来历。
此外,落下闳还创造了浑仪、提出了浑天说,是世界较早的地球为中心的宇宙观。他的许多思想对后世的中国古代天文学家产生了很大的影响,被巴蜀人称为“前圣”。在数学方面,他发明“连分数(辗转相除)求渐进分数”的方法,定名“通其率”,现代学者称之为“落下闳算法”[2]。
为纪念落下闳,2004年9月,中国科学院国家天文台发现的第16757号小行星命名为“落下闳”。四川阆中建立了落下闳故居,运用现代科技手段展现落下闳的贡献,2006年1月正式对外开放[3]
- ^ 班固. 汉书·律历志(上).
- ^ “通天彻地”落下闳. 光明日报. 2018-02-25.
- ^ 落下闳纪念馆:智慧博物馆的阆中版本. [2021-06-25]. (原始内容存档于2021-08-20).
{{bottomLinkPreText}}
{{bottomLinkText}}
This page is based on a Wikipedia article written by
contributors (read/edit).
Text is available under the
CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.
{{current.index+1}} of {{items.length}}
Thanks for reporting this video!
This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:
An extension you use may be preventing Wikiwand articles from loading properly.
If you're using HTTPS Everywhere or you're unable to access any article on Wikiwand, please consider switching to HTTPS (https://www.wikiwand.com).
An extension you use may be preventing Wikiwand articles from loading properly.
If you are using an Ad-Blocker, it might have mistakenly blocked our content.
You will need to temporarily disable your Ad-blocker to view this page.
✕
This article was just edited, click to reload
Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}
Follow Us
Don't forget to rate us
Oh no, there's been an error
Please help us solve this error by emailing us at
support@wikiwand.com
Let us know what you've done that caused this error, what browser you're using, and whether you have any special extensions/add-ons installed.
Thank you!