Follow us on Facebook to receive important updates Follow us on Twitter to receive important updates Follow us on sina.com's microblogging site to receive important updates Follow us on Douban to receive important updates
Chinese Text Project Wiki
-> -> -> Search for "穊"
Search details:
Scope: 宋史
Condition : Contains text 「穊」
Total 1

志第一 天文一(儀象 極度 黃、赤道 中星 土圭)

23
臣嘗歷考古今儀象之法,《虞書》所謂璇璣玉衡,唯鄭康成粗記其法,至洛下閎制圓儀,賈逵又加黃道,其詳皆不存於書。其後張衡為銅儀於密室中,以水轉之,蓋所謂渾象,非古之璣衡也。吳孫氏時王蕃、陸績皆嘗為儀及象,其說以謂舊以二分為一度,而患星辰稠,張衡改用四分,而復椎重難運。故蕃以三分為度,周丈有九寸五分寸之三,而具黃赤道焉。績之說以天形如鳥卵小橢,而黃、赤道短長相害,不能應法。至劉曜時,南陽孔定制銅儀,有雙規,規正距子午以象天;有橫規,判儀之中以象地;有時規,斜絡天腹以候赤道;南北植幹,以法二極;其中乃為游規、窺管。劉曜太史令晁崇、斛蘭皆嘗為鐵儀,其規有六,四常定,以象地,一象赤道,其二像二極,乃是定所謂雙規者也。其制與定法大同,唯南北柱曲抱雙規,下有縱衡水平,以銀錯星度,小變舊法。而皆不言有黃道,疑其失傳也。唐李淳風為圓儀三重:其外曰六合,有天經雙規、金渾緯規、金常規。次曰三辰,轉於六合之內,圓徑八尺,有璇璣規、月游規,所謂璇璣者,黃、赤道屬焉。又次曰四游,南北為天樞,中為游筒可以升降游轉,別為月道,傍列二百四十九交以攜月游。一行以為難用,而其法亦亡。其後率府兵曹梁令瓚更以木為游儀,因淳風之法而稍附新意,詔與一行雜校得失,改鑄銅儀,古今稱其詳確。至道中,初鑄渾天儀於司天監,多因斛蘭、晁崇之法。皇祐中,改鑄銅儀於天文院,姑用令瓚、一行之論,而去取交有失得。

Enjoy this site? Please help.Site design and content copyright 2006-2024. When quoting or citing information from this site, please link to the corresponding page or to https://ctext.org. Please note that the use of automatic download software on this site is strictly prohibited, and that users of such software are automatically banned without warning to save bandwidth. 沪ICP备09015720号-3Comments? Suggestions? Please raise them here.