A compass is also called a compass. What is its historical origin?

Compass, also known as compass, is a feng shui detection tool and a commonly used operation tool for managing style. The compass is mainly composed of a magnetic needle in the center of a disk and a series of concentric circles, each of which represents the ancient people in China's understanding of a certain level of information in the cosmic system. The ancients in China believed that man's gas field was controlled by the gas field of the universe, that harmony between man and the universe was auspicious, and disharmony between man and the universe was fierce. So, by experience, they put all levels of information in the universe, such as the stars in the sky, everything represented by the five actions on the earth, heavenly stems and earthly branches and so on. , all on the compass.

Geomantic omen is to find the most suitable position or time for a specific person or thing through the rotation of a magnetic needle. Although the concept of "magnetic field" is not mentioned in geomantic omen, the coordination of the directions, orientations and intervals of each layer on the compass implies the law of "magnetic field".

Origin and evolution, Engels said in the book "Machine, Natural Force and Application of Science": "Compass opened the world market and established a colony." This invention of ancient people in China was first used for navigation, which really promoted the emergence and development of capitalism. Magnetic needles are used for navigation, making three quarters of the earth's sea area a thoroughfare. From 65438 to the 5th century, Columbus crossed the Atlantic Ocean and reached the American continent. /kloc-At the beginning of the 6th century, the success of Magellan's fleet sailing around the world could not be separated from the application of magnetic needles. However, when and how the magnetic needle was introduced into Europe has been debated by international scholars for hundreds of years. Engels made a scientific conclusion in Dialectics of Nature. He pointed out that "the magnetic needle was" passed from China to Europeans "around" 1 180 ".

The predecessor of the compass is called "Sina", and the earliest record can be found in "You did everything wrong" in the third century BC. At that time, when people talked about the phenomenon that magnets attract iron, they thought it meant "motherly belt", so they once wrote "magnetism" as "kindness". Sina is like a household spoon with a hemispherical bottom. In order to reduce friction, it is easy to turn when placed on a plate with "stem and branch" scales. In the Song Dynasty in the 0/2nd century A.D./KLOC, Mi Zhu talked about the navigation compass in Ketan, Zhou Ping, and Xu Jing talked about the navigation compass in the Koryo Atlas. Some people say that it is still too early to use the compass, because according to the records of Yue in the Southern Dynasties, the "guiding boat" appeared in the Jin Dynasty. (According to Japanese records, in the fourth year of Emperor Qi Ming (the third year of Tang Gaozong in the reign of Emperor Xian Qing, AD 658), Abe said: "Abe led Chen Tian Birov to crusade against Su Shen (Bohai Kingdom)-shaman wisdom surpassed South Locomotive."