Zhang Sixun

Scientist, Project participant


Who is Zhang Sixun?

Zhang Sixun was a Chinese astronomer and military engineer from Bazhong, Sichuan during the early Song Dynasty. He is credited with creating an armillary sphere for his astronomical clock tower that employed the use of liquid mercury. The liquid mercury filled scoops of the waterwheel would rotate and thus provide the effect of an escapement mechanism in clockworks and allow the astronomical armillary sphere to rotate as needed. He designed the model for his armillary sphere in 976 and completed the creation of it in 977.

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Also known as
  • 张思训
  • 張思訓
  • China

on July 23, 2013


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"Zhang Sixun." Biographies.net. STANDS4 LLC, 2024. Web. 23 Jun 2024. <https://www.biographies.net/people/en/zhang_sixun>.

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