Day of Inventions (In celebration of the world's first rain gauge invention)

K-HISTORY

Meaningful Days of Korean History

Day of Inventions (In celebration of the world's first rain gauge invention) +

1442.5.19
day of invention
'Invention Day' is a day defined to promote the progress of technology by promoting invention ideas, and is May 19 every year.

This was established in 1957 to commemorate the day King Sejong officially began using the rain gauge on May 19, 1442, after Jang Yeong-sil invented the world's first rain gauge in 1441, 23 (the year of King Sejong's reign).

In March 1973, the day of invention was merged into the day of the sky under the regulations on various anniversaries, etc., but was revived in 1982 when the Korean Patent Association expanded and reorganized into the Korea Invention Patent Association.

Meanwhile, the rain gauge invented during the Joseon Dynasty was made with the need for a more scientific method to prepare for drought and flooding for agriculture.

It consists of a steel cylinder with a depth of 241 cm and a diameter of 16 cm, and a rain basin made of stone. The water collected in the barrel was measured with casts.

In particular, the rain gauge of Joseon was about 200 years ahead of the one invented by Italy's B. Gattelli in 1639.
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