International Young Physicists' Tournament

The Physics World Cup
20th IYPT 2007 in Seoul/Korea
5 of July - 11 of July 2007

Rain gauge

The world's first Rain Gauge was developed in 1441 during the Joseon Dynasty of Korea, by Jang Young Sil under the order of King Se Jong, and it was called Cheuk Woo Gi. He sent a standardized rain gauge to every village, and they were used as an official tool to measure the farm's potential harvest. Additionally, these measurements were taken to consideration to determine what the farmer's land taxes should be. Development of Rain Gauge came two hundred years earlier before inventor Christopher Wren created a rain gauge in Europe.

Ministry of Science & TechnologyKorea Science and Engineering FoundationThe Korean Society for the GiftedKyungwon UniversityThe Korean Physical Society