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The Song dynasty philosopher Zhu Xi (1130–1200) wrote of this curious natural phenomenon of fossils as well. He was known to have read the works of Shen Kuo. [ 92 ] Shen's description of soil erosion and weathering predated that of Georgius Agricola in his book of 1546, De veteribus et novis metallis . [ 94 ]
The magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty and Tang dynasty (since about 206 BC). [1] [3] [34] The compass was used in Song dynasty China by the military for navigational orienteering by 1040–44, [22] [35] [36] and was used for maritime navigation by 1111 to 1117. [37]
A lodestone compass was used in China during the Han dynasty between the 2nd century BC and 1st century AD, where it was called the "south-governor" (sīnán 司南). [14] The earliest reference to a magnetic device used for navigation is in a Song dynasty book dated to 1040–1044, where there is a description of an iron "south-pointing fish ...
Besides clockwork, hydraulic-powered armillary spheres, odometers, and mechanical compass vehicles, there were other impressive devices of mechanical engineering found during the Song dynasty. Although literary references for mechanical revolving repositories and book cases of Buddhist temples trace back to at least 823 during the Tang dynasty ...
It was first invented by Hainanese immigrants in Singapore during the 1920s. [4] [5] [6] Kaya toast is a well known Singaporean snack commonly eaten during breakfast or afternoon tea. [7] Katong laksa is a Singaporean variant of the spicy noodle soup laksa inspired by people who live in the precinct of Katong located in eastern Singapore. [8]
The Chinese polymath Shen Kuo (1031–1095) of the Song dynasty (960–1279) was the first to accurately describe both magnetic declination (in discerning true north) and the magnetic needle compass in his Dream Pool Essays of 1088, and the Song dynasty writer Zhu Yu (fl. 12th century) was the first to mention use of the compass specifically ...
Beijing is “convinced that America is seeking to contain it and suppress its rise,” PM Lawrence Wong argued on Sunday.
A modern military compass, with included sight device for aligning. A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north.