Compass (universal compass)
2. A short story about the origin of the compass.
3. The origin and history of the compass.
4. The origin of four great inventions of ancient china compass.
1. Compass is the result of the long-term practice of working people in ancient China on the magnetism of magnets.
As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science and technology and civilization.
3. In ancient China, the compass was first used for sacrifice, etiquette, military affairs and divination, as well as determining the orientation when looking at geomantic omen.
4. 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 tangential direction of magnetic meridian. The south pole of the magnetic needle points to the geographical south pole (magnetic north pole), and the direction can be distinguished by using this property.
It is often used in navigation, geodesy, tourism and military affairs.
6. 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.
7. According to ancient mine records, it first appeared in the area of Cishan during the Warring States Period.
8. Compass is the result of long-term practice of working people in ancient China.
9. 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.
10. In ancient China, the compass was first used for sacrifice, etiquette, military affairs and divination, and to determine the orientation when watching Feng Shui.