Zhang Sixun

Zhang Sixun (Cina ringkas: 张思训; Cina tradisional: 張思訓; pinyin: Zhāng Sīxùn; Wade-Giles: Chang Ssu-hsün, fl. abad ke-10) ialah seorang ahli astronomi dan jurutera tentera dari Bazhong, Sichuan pada awal Dinasti Song (960-1279 M).[1] Beliau dikenang kerana mencipta sebuah sfera armila untuk menara jam astronomi binaan beliau yang menggunakan raksa cair (yang dititiskan secara berkala dari sebuah jam klepsidra).[2] Raksa cair itu mengisi timba roda air yang berpusing untuk menghasilkan kesan mekanisme bolosan dalam sawat jam serta membolehkan sfera armila astronomi untuk berpusing apabila perlu.[2] Beliau mereka model sfera armilanya pada tahun 976, dan melengkapkan pembinaannya pada 977.[1]

Lihat juga

Notes

  1. ^ a b Liu, 577.
  2. ^ a b Needham, Volume 4, 469-471.

Rujukan

  • Liu, Heping. ""The Water Mill" and Northern Song Imperial Patronage of Art, Commerce, and Science," The Art Bulletin (Volume 84, Number 4, 2002): 566–595.
  • Needham, Joseph (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books, Ltd.

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