……………. discovered the concept of 'true north' and improved the design of 'armillary sphere'.
A)shen kuo
B)bi sheng
C)jiao yu
D)wang zhen

Question

Quizplus · Accepted Answer

Shen Kuo was a polymath Chinese scientist and statesman of the Song Dynasty (960–1279) who is credited with many innovations and discoveries in the fields of astronomy, mathematics, cartography, geology, and engineering. Among his contributions, he discovered the concept of true north and made improvements to the design of the armillary sphere, an ancient astronomical instrument used to model the celestial sphere.

…………… Discovered the Concept of 'True North' and Improved the Design