Jagyeongnu self-striking water clock
Jagyeongnu, clepsidra automática de Jang Yeong-sil
- Date
- 1434 · confidence high
- Place
- Gyeongbokgung Palace, Seoul, South Korea
- Credited to
- Jang Yeong-sil, commissioned by Sejong the Great
- People
- 👤 Jang Yeong-sil1400–
- Field
- Knowledge & symbols
What it is
A water clock that, using floats and metal balls falling through channels, rang bells, drums and gongs and displayed figures to announce the hours. It was the official clock of Joseon.
What it led to
- the official time of Seoul and the opening of the city gates
- the Okru astronomical water clock (1438)
- Song I-yeong's armillary clock