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2. Rain gauge - Wikipedia

   en.wikipedia.org/wiki/Rain_gauge

   A rain gauge (also known as udometer, pluviometer, ombrometer, and hyetometer) is an instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over a predefined area, over a period of time. [1] It is used to determine the depth of precipitation (usually in mm) that occurs over a unit area and ...

3. Cheugugi - Wikipedia

   en.wikipedia.org/wiki/Cheugugi

   Cheugugi. A Cheugugi at Jang Yeong-sil Science Garden in Busan. Cheugugi (Hangul: 측우기, Hanja: 測雨器) is the first well-known rain gauge invented and used during the Joseon dynasty of Korea. It was invented and supplied to each provincial offices during the King Sejong the Great 's reign. As of 2010, only one example of the Cheugugi ...

4. Amazon River - Wikipedia

   en.wikipedia.org/wiki/Amazon_River

   Topography of the Amazon River Basin. The Amazon River ( UK: / ˈæməzən /, US: / ˈæməzɒn /; Spanish: Río Amazonas, Portuguese: Rio Amazonas) in South America is the largest river by discharge volume of water in the world, and the longest or second-longest river system in the world, a title which is disputed with the Nile.

5. Precipitation types - Wikipedia

   en.wikipedia.org/wiki/Precipitation_types

   Precipitation is measured using a rain gauge, and more recently remote sensing techniques such as a weather radar. When classified according to the rate of precipitation, rain can be divided into categories. Light rain describes rainfall which falls at a rate of between a trace and 2.5 millimetres (0.098 in) per hour. Moderate rain describes ...

6. Jang Yeong-sil - Wikipedia

   en.wikipedia.org/wiki/Jang_Yeong-sil

   Jang Yeong-sil ( Korean : 장영실; Hanja : 蔣英實; Korean pronunciation: [t͡ɕɐŋ jʌŋɕiɭ]; 1390 – after 1442) was a Korean mechanical engineer, scientist, and inventor during the Joseon dynasty (1392–1897). Although Jang was born a peasant, King Sejong allowed Jang to work at the royal palace. Jang's inventions, such as the ...

7. Stream gauge - Wikipedia

   en.wikipedia.org/wiki/Stream_gauge

   A stream gauge, streamgage or stream gauging station is a location used by hydrologists or environmental scientists to monitor and test terrestrial bodies of water. Hydrometric measurements of water level surface elevation ("stage") and/or volumetric discharge (flow) are generally taken and observations of biota and water quality may also be made.