Zhang Heng (78-139)

The Historical Record for March 1: Zhang Heng’s Seismometer

The Historical Record for March 1: Zhang Heng’s Seismometer

Zhang Heng (78-139) was quite the Han dynasty renaissance man. Despite his fame as a poet of considerable talents, a celebrated scholar of the classics, and an official serving at court, Zhang’s greatest and best-known contributions actually came in the field of science and engineering.