This inventor of the world's first rain gage has an asteroid named after him. Name that revered scientist.
Answer Jang Young-Sil
The "cheugugi" was invented by Jang Young-Sil as the first rain gauge in the world. The 15th century inventor also created an astronomical clock, a celestial globe, a hemispherical sundial, an observatory, and an automatic water clock. He even has an asteroid named after him.
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