The compass was invented by the ancient family of Naming in our country

During the Warring States Period, the people of our country have discovered the characteristics of the magnet guide to the north and made the "Sinan". Use Sinan to determine the exact time. These instructions had been applied in many ways at that time.

In the early days of the Northern Song Dynasty, people discovered the artificial magnetization method, which used natural magnets to rub steel needles to make a compass. Later, people learned to fix the compass in the azimuth dial and made the compass needle. At that time, the compass was still a water compass, that is, the magnetic needle was floating on the water with the wick across it.

The water compass was used all over the place during the Southern Song Dynasty. As for the dry compass, it did not appear in China until the Jiajing period of the Ming Dynasty (1522-1566).

Everyone knows it, so I don't need to repeat it.

1. The compass was invented by Xuanyuan Yellow Emperor of Xiong Kingdom (now Xinzheng City, Henan), and was sorted, summarized, and named by Shen Kuo, a scientist in the Song Dynasty.

2. Cui Bao of the Western Jin Dynasty "Ancient and Modern Notes" said: "The Yellow Emperor and Chiyou fought in the field of Zhuolu. It is especially foggy, and the soldiers are fascinated.

So he made a guide car to show the Quartet, and then captured Chi You and the emperor. According to historical documents, it is said that in 2700 BC China's Xuanyuan Yellow Emperor invented the compass. The Yellow Emperor used a compass to discern the direction in the fog and defeated Chiyou.

3. The compass, called Sinan in ancient times, is mainly composed of a magnetic needle mounted on the shaft, the magnetic needle can rotate freely under the action of the natural geomagnetic field and remain in the tangent direction of the magnetic meridian, the south pole of the magnetic needle points to the geographical south pole (magnetic field North Pole), and the direction can be identified by using this performance.

4. It is often used in navigation, geodesy, travel and military aspects. There are three types of components for the compass that physically indicates the direction, namely the Sinan, the compass and the magnetic needle, all of which belong to Chinese inventions. According to the records of the "Ancient Mine Record", it first appeared in the Cishan area during the Warring States Period.

5. Sinan grinds the magnet into a spoon-shaped shape with a long handle, and puts it on a copper plate divided into 24 directions, the bottom of the spoon is very slippery, and the copper plate is very bright, so that when the spoon rotates and stops, the spoon handle naturally points to the south. In the 11th century, Shen Kuo discovered in practice that after rubbing a piece of iron on a magnet, it could also generate magnetism, and it was relatively stable, so he made an artificial magnet. This significant discovery paved the way for the manufacture of more advanced compasses.

6. The compass is the result of the long-term practice of the ancient Chinese working people on the magnetic nature of magnets. As one of the four great inventions of ancient China, its invention has played an immeasurable role in the development of human science and technology and civilization. In ancient China, the compass was first used for rituals, ceremonies, military affairs, divination and feng shui to determine directions.

Sinan The four ancient inventions of China are the compass, gunpowder, movable type printing and papermaking.

A compass is a simple instrument used to determine directions.

Gunpowder was made by mixing saltpeter, sulfur and charcoal, and people at that time used these three things as medicine to cure diseases, so it was named "gunpowder", which means "the medicine that ignites the fire."

Papermaking In the first year of the Eastern Han Dynasty and Emperor Yuanxing (105 AD), Cai Lun invented the use of bark, broken fishing nets, rags, hemp and other raw materials on the basis of summarizing the experience of his predecessors in manufacturing silk weaving crystals, and made it suitable for writing plant fiber paper, which made paper a commonly used writing material. It is called "Cai Hou paper."

Movable type printing It began with the engraving printing of the Sui Dynasty, and was developed and perfected by Bi Sheng during the reign of Song Renzong, resulting in movable type printing, the ancestor of the compass - Sinan.

Movable type Yun Nian Liang Yin Gao Early Brush Technique - Bi Sheng.

Papermaking ——— Cai Lun.

Gunpowder ——— alchemist.

Gunpowder is one of the four great inventions of ancient China. Because it was made by mixing saltpeter, sulfur and charcoal, and people at that time used these three things as a side medicine to cure diseases, so it was named "gunpowder", which means "medicine on fire").

The first person to invent paper was not Cai Lun, Cai Lun was the person who improved papermaking and greatly reduced the cost of papermaking, so that the application of paper was promoted!

The earth is a big magnet. The two poles of the Earth are close to the geographic south pole and the geographic north pole, respectively. When the magnet on the earth's surface can rotate freely, it will indicate north and south due to the nature of the magnet that repels the same sex and attracts the opposite sex.

The Chinese working people in the pre-Qin era have accumulated an understanding of magnetic phenomena, and when exploring iron ore, they often encounter magnetite, that is, magnets, and in the Western Han Dynasty, there was a monk named Luan Da, who used the characteristics of magnets to make two chess pieces, and by adjusting the mutual position of the polarity of the two chess pieces, sometimes the two chess pieces attract each other, and sometimes repel each other. Luan Da called it "fighting chess".

The predecessor of the compass was Sinan, one of the four great inventions of ancient China. In China's orientation culture, it has gone through three stages, from astronomical method positioning, then to magnetic method to make Sinan, and finally from Sinan to compass, followed by the continuous improvement of azimuth determination technology.

1. China is recognized as the country in the world that invented the compass, and the invention of the compass is the result of the understanding of the magnetic properties of objects by the working people of the Han nationality in China in the practice of the elders.

2. Due to the production and labor, people came into contact with magnetite and began to understand the properties of magnetism. People first discovered the property of magnets to attract iron, and later discovered the directivity of magnets. After many experiments and research, a practical compass was finally invented.

3. The earliest compass was made of natural magnets, which shows that the working people of the Han nationality in China discovered natural magnets and their iron absorption properties very early.

4. According to ancient records, as far back as the Spring and Autumn Period and the Warring States Period, due to the great change period from the slave society to the feudal society, the productive forces have developed greatly, especially the production of agricultural slinger pants is even more prosperous, thus promoting the development of mining and smelting industry. In the long-term production practice, people know magnets from iron ore.