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Scope: 宋書 |
Condition : References 「張衡」 |
Total 3 |
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13 | 古舊渾象以二分為一度,凡周七尺三寸半分。張衡更制,以四分為一度,凡周一丈四尺六寸。蕃以古制局小,星辰稠穊;衡器傷大,難可轉移。更制渾象,以三分為一度,凡周天一丈九寸五分四分分之三也。 |
15 | 太中大夫徐爰曰:「渾儀之制,未詳厥始。王蕃言:『《虞書》稱「在璇璣玉衡,以齊七政」。則今渾天儀日月五星是也。鄭玄說:「動運為機,持正為衡,皆以玉為之。視其行度,觀受禪是非也。」渾儀,羲和氏之舊器,歷代相傳,謂之機衡,其所由來,有原統矣。而斯器設在候臺,史官禁密,學者寡得聞見;穿鑿之徒,不解機衡之意,見有七政之言,因以為北斗七星,構造虛文,託之讖緯,史遷、班固,猶尚惑之。鄭玄有贍雅高遠之才,沈靜精妙之思,超然獨見,改正其說,聖人復出,不易斯言矣。』蕃之所云如此。夫候審七曜,當以運行為體,設器擬象,焉得定其盈縮,推斯而言,未為通論。設使唐、虞之世,已有渾儀,涉歷三代,以為定準,後世聿遵,孰敢非革。而三天之儀,紛然莫辯,至揚雄方難蓋通渾。張衡為太史令,乃鑄銅制範。衡傳云:『其作渾天儀,考步陰陽,最為詳密。』故知自衡以前,未有斯儀矣。蕃又云:『渾天遭秦之亂,師徒喪絕,而失其文,惟渾天儀尚在候臺。』案既非舜之璇玉,又不載今儀所造,以緯書為穿鑿,鄭玄為博實,偏信無據,未可承用。夫璇玉,貴美之名;機衡,詳細之目。所以先儒以為北斗七星,天綱運轉,聖人仰觀俯察,以審時變焉。」 |
17 | 若問天形定體,渾儀疏密,則雄應以渾儀答之,而舉此三人以對者,則知此三人制造渾儀,以圖晷緯。問者蓋渾儀之疏密,非問渾儀之淺深也。以此而推,則西漢長安已有其器矣。將由喪亂亡失,故衡復鑄之乎?王蕃又記古渾儀尺度並張衡改制之文,則知斯器非衡始造,明矣。衡所造渾儀,傳至魏、晉,中華覆敗,沈沒戎虜;績、蕃舊器,亦不復存。晉安帝義熙十四年,高祖平長安,得衡舊器,儀狀雖舉,不綴經星七曜。 |
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