Zhang Heng

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astronomer, inventor of the seismoscope

78 – 139 · 61 years · Luoyang · Asia

Han dynasty polymath who built a water-powered armillary sphere and the world's first seismoscope.

Wikipedia (Russian) · Wikipedia (English) · 1st century

Contemporaries around the world

Europe

Marcus Aurelius — Roman emperor and Stoic philosopher, 43 years younger
Galen — physician and anatomist, 51 years younger

Africa

Claudius Ptolemy — astronomer and geographer, 22 years younger

Asia

Ban Zhao — historian and writer, 33 years older

The world in their lifetime

c. 100 The rise of Aksum — aged 22, Africa
105 Cai Lun and the invention of paper — aged 27, Asia