Although the Chinese government has stated that rainfall measurements were recorded as early as 3,000 years ago during the Chou dynasty, the first instrument designed specifically to collect and measure rainfall was invented by King Sejong's son, the future King Munjong, in Korea during in the 1400s. King Sejong wished to improve the technology used in Korean agriculture, and some of the most accurately maintained rainfall records were recorded during this time. The newly invented rain gauge, called a cheugugi, was sent to provincial Korean villages to measure rainfall as an indicator of farmers' potential harvest yields and served as a basis of determining local taxation rates.Know More
Prior to the invention of the cheugugi, the rainfall in King Sejong's realm was measured by determining the depth of rain water in puddles. This primitive method, however, did not provide accurate readings because of the differences in absorption rates among varying soil types. To correct these errors, King Sejong charged the kingdom's research institute, the Gwansanggam, with the task of creating a device capable of taking accurate readings and to develop a standardized measurement system. After the cheugugi and the measurement system were created, the king ordered his appointed provincial governors to install the device in each of their office courtyards. They were also ordered to remain personally responsible for measuring and recording the rainfall readings.
The first cheugugis were made from iron, but later versions were constructed from either ceramic or copper. The device is cylindrical in shape and is supported by a hexahedral stone base. The reasonable height of the cheugugi assures that additional splashed water can't flow into it.Learn more about Inventions
According to historical records, the Flemish population of northern France probably invented the trombone, although the exact origins of the instrument remain uncertain. The trombone appeared in the middle of the 15th century as a variation of the trumpet, also a brass instrument. The trombone resembles the trumpet in some aspects of design, but has a sliding tube and produces lower-pitched tones.Full Answer >
Hans and Zacharias Janssen were a Dutch father and son accredited with the creation of the first microscope. Both lived in the Netherlands and were working with each other as spectacle makers.Full Answer >
John Boyd Dunlop, a British veterinary surgeon who lived in Belfast, invented the first rubber tire for his son, who in 1888 was prescribed cycling as a cure for his cold.Full Answer >
The instrument used to measure rainfall is called a rain gauge. The classic rain gauge consists of a funnel that leads to a measuring tube.Full Answer >