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Transcript

Jang Yeong Sil

Early Life

Sources

Additional Notes

wikipedia.com

marsashabrina.wordpress.com

exploringkorea.com

  • Jang Yeong Sil was exiled from the palace he worked and studied at. This was because Jang's invention for the king, the gama, broke while the king was traveling (he was held responsible).
  • His death date, as well as his birth date, is unknown.
  • Most of Jang Yeong Sil's early life is not recorded because he was born as a slave
  • He and his family served for the king until King Sejong generated a new policy of breaking class barriers placed on the national civil service
  • Was the third of five brothers

Who is Jang Yeong Sil?

  • Jang Yeong Sil was an astronomer who lived during the Joseon Dynasty.
  • Many call him "the best scientist in Joseon" because he was known for inventing creative and innovative devices

Professional Career

  • Jang Yeong Sil was an astronomer and inventor.
  • His talent and fame resulted in him being sent to the royal court in Hanseong (also known as present-day Seoul). King Sejong saw his talents in crafts and engineering; he later allowed the scientist as a government official in the palace

This astronomical instrument created by Jang Yeong Sil was used to determine the positions of heaven bodies

Special Training

  • He worked as an engineer at a type factory
  • traveled to China in 1421 to learn about a variety of technologies

Major Contributions

  • Jang Yeong Sil is best known for inventing the world's first rain gauge (1441), which was used to measure rainfall and improve the technology used in Korean agriculture.
  • He also created other instruments such as the sundial, water clock, and water gauge.
  • One important figure who sponsored Jang Yeong Sil was Sejong the Great, the king who ruled Joseon at the time

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