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Chinese Text Project
Simplified Chinese version
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Scope: 卷上 Request type: Paragraph
Condition 1: Contains text "句股各自乘并而開方除之得邪至日從髀所旁至日所十萬里" Matched:1.
Total 1 paragraphs. Page 1 of 1.

卷上

Books referencing 《卷上》 Library Resources
8 卷上:
荣方复归,思之,数日不能得。复见陈子曰:“方思之以精熟矣。智有所不及,而神有所穷,知不能得。愿终请说之。”陈子曰:“复坐,吾语汝。”于是荣方复坐而请。陈子说之曰:“夏至南万六千里,冬至南十三万五千里,日中立竿测影。此一者天道之数。周髀长八尺,夏至之日晷一尺六寸。髀者,股也。正晷者,句也。正南千里,句一尺五寸。正北千里,句一尺七寸。日益表南,晷日益长。候句六尺,即取竹,空径一寸,长八尺,捕影而视之,空正掩日,而日应空之孔。由此观之,率八十寸而得径一寸。故以句为首,以髀为股。从髀至日下六万里,而髀无影。从此以上至日,则八万里。若求邪至日者,以日下为句,日高为股。句、股各自乘,并而开方除之,得邪至日,从髀所旁至日所十万里。以率率之,八十里得径一里。十万里得径千二百五十里。故曰,日晷径千二百五十里。”

Total 1 paragraphs. Page 1 of 1.