Who invented the compass? Who invented the compass?

1. Compass was invented by Huangdi, Xuanyuan, Xiongguo, and was sorted, summarized and named by Shen Kuo, a scientist in the Song Dynasty.

2. Cui Bao's Notes on Ancient and Modern Times in the Western Jin Dynasty said: "The Yellow Emperor and Chiyou fought in the wild of Zhuolu. In the fog, Chiyou is full of soldiers. So he made a compass to indicate four directions, and then he captured Chiyou, the throne. " According to historical documents, it is said that Xuanyuan, the Yellow Emperor of China, invented the compass in 2700 BC. Huangdi used a compass to tell the direction in the fog and defeated Chiyou.

3. Compass, called Sina in ancient times, is mainly composed of magnetic needles installed on the shaft. Under the action of natural geomagnetic field, the magnetic needle can rotate freely and keep in the tangent direction of magnetic meridian, and the south pole of the magnetic needle points to the geographical south pole, so the direction can be distinguished by using this property.

4. Commonly used in navigation, geodesy, tourism and military. The invention of the compass with physical direction indication has three parts, namely Sina, compass and magnetic needle, all of which belong to the invention of China. According to ancient mine records, it first appeared in the Cishan area during the Warring States Period.

Sina grinds the magnet into a spoon shape with a long handle and puts it on a copper plate divided into 24 directions. The bottom of the spoon is slippery and the copper plate is bright, so that when the spoon stops rotating, the handle naturally points south. 165438+in the 20th century, Shen Kuo discovered in practice that a piece of iron can produce magnetism after rubbing on a magnet, and it is relatively stable, so he made an artificial magnet. This great discovery provides conditions for making more advanced compasses.

6. Compass is the result of China ancient working people's understanding of magnet magnetism in long-term practice. As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science, technology and civilization. In ancient China, the compass was first used for rituals, etiquette, military affairs and divination, and to determine the orientation when looking at geomantic omen.