Zhang Heng
Zhang Heng (78–139) was a Eastern Han cartographer, mathematician and astronomer.
Also recorded as Chang Heng.
Overview
Catalogue entries for maps and atlases state plate, state, colouring and condition. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
Chinese scientist and statesman (78–139)
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Zhang Heng”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q197206: Zhang Heng
Consult the source