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Jagyeongnu
The Borugak Jagyeongnu ("Water Clock of Borugak Pavilion"), classified as a scientific instrument, is the 229th National Treasure of South Korea and was designated by the South Korean government on March 3, 1985. The water clock is currently held and managed by the National Palace Museum of Korea in Seoul. It dates to the time of King Sejong of the Joseon Dynasty. Water clocks have a long history of use in Korea with the first mention of one in the records of the Samguk Sagi during the Three Kingdoms era. In 1434, during the reign of King Sejong the Great a water clock was made by Jang Yeong-sil which would mark the hour automatically with the sounds of a bell, gong, and drum. That clock, Jagyeokru ("self-striking water clock"), was used to keep the standard of time in the Joseon Dynasty. The clock was not preserved well and so in 1536, King Jungjong ordered the clock remade and improved which was done by Yu Jeon. Today, only three water bowls and two cylindrical water conta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Clock
A water clock or clepsydra (; ; ) is a timepiece by which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel, and where the amount is then measured. Water clocks are one of the oldest time-measuring instruments. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon, Egypt, and Persia around the 16th century BC. Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain. Some authors, however, claim that water clocks appeared in China as early as 4000 BC. Water clocks were also used in ancient Greece and ancient Rome, described by technical writers such as Ctesibius and Vitruvius. Designs A water clock uses the flow of water to measure time. If viscosity is neglected, the physical principle required to study such clocks is Torricelli's law. There are two types of water clocks: inflow and outflo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseon
Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and replaced by the Korean Empire in October 1897. The kingdom was founded following the aftermath of the overthrow of Goryeo in what is today the city of Kaesong. Early on, Korea was retitled and the capital was relocated to modern-day Seoul. The kingdom's northernmost borders were expanded to the natural boundaries at the rivers of Amrok and Tuman through the subjugation of the Jurchens. During its 500-year duration, Joseon encouraged the entrenchment of Confucian ideals and doctrines in Korean society. Neo-Confucianism was installed as the new state's ideology. Buddhism was accordingly discouraged, and occasionally the practitioners faced persecutions. Joseon consolidated its effective rule over the territory of current Korea and saw the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseon Dynasty
Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and replaced by the Korean Empire in October 1897. The kingdom was founded following the aftermath of the overthrow of Goryeo in what is today the city of Kaesong. Early on, Korea was retitled and the capital was relocated to modern-day Seoul. The kingdom's northernmost borders were expanded to the natural boundaries at the rivers of Amrok and Tuman through the subjugation of the Jurchens. During its 500-year duration, Joseon encouraged the entrenchment of Confucian ideals and doctrines in Korean society. Neo-Confucianism was installed as the new state's ideology. Buddhism was accordingly discouraged, and occasionally the practitioners faced persecutions. Joseon consolidated its effective rule over the territory of current Korea and saw the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Clock
A water clock or clepsydra (; ; ) is a timepiece by which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel, and where the amount is then measured. Water clocks are one of the oldest time-measuring instruments. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon, Egypt, and Persia around the 16th century BC. Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain. Some authors, however, claim that water clocks appeared in China as early as 4000 BC. Water clocks were also used in ancient Greece and ancient Rome, described by technical writers such as Ctesibius and Vitruvius. Designs A water clock uses the flow of water to measure time. If viscosity is neglected, the physical principle required to study such clocks is Torricelli's law. There are two types of water clocks: inflow and outflo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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