Zhang Heng [Chang Heng] (78-139)

Details Zhang Heng [Chang Heng] (78-139) Zhang Heng [Chang Heng] (78-139)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke4117.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 4117. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astronomy

History And Archaeoastronomy, Biographies

Scientific paper

Mathematician, astronomer and geographer, born in Nan-yang, China, became chief astrologer and minister under the Emperor An'ti, corrected the calendar to bring it into line with the seasons. Invented the first seismoscope for measuring earthquakes, essentially a series of finely balanced balls that dropped and made a noise when there was a tremor. He constructed a rotating celestial globe as a m...

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