1. Jang Yeong-silJang Yeong-sil was a prominent Korean scientist and astronomer during the Joseon Dynasty (1392–1910). Although Jang was born as a peasant, King Sejong's (r. 1418–1450) new policy of breaking class barriers placed on the national civil service allowed Jang to work at the royal palace. Jang's inventions, such as the Cheugugi and the water gauge, highlight the technological advancements of the Joseon Dynasty.
Read “Jang Yeong-sil” on English Wikipedia
Read “蒋英実” on Japanese Wikipedia
Read “Jang Yeong-sil” on DBpedia
Read “Jang Yeong-sil” on English Wikipedia
Read “蒋英実” on Japanese Wikipedia
Read “Jang Yeong-sil” on DBpedia
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