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Name: Homemade Compass
Product Code: KX1337
Gross weight: 20G
Size: 14*11CM
Packing Quantity: 500
Crate Size: 60*50*55
The compass is the result of the long-term practice of the ancient Han Chinese people in understanding the magnetic properties of objects. As a The Four Great Inventions of Ancient ChinaThe invention of the compass has played an irreplaceable role in the development of human science and technology and civilization. In ancient China, the compass was initially used for determining directions during sacrifices, etiquette, military operations, and for feng shui. By the late 11th or early 12th century, Chinese ships began using the compass for navigation. During the Northern Song Dynasty, Pingzhou can talkThe helmsman (the person who steers the ship) recognizes the geography by observing the stars at night, the sun during the day, and the compass in overcast conditions.
The compass is a simple instrument used to determine direction. The predecessor of the compass is one of the four great inventions of ancient China.The South Point. The main component is a shaft with a free-rotating compass。磁针在geomagnetic fieldUnder the action can maintain the tangent direction of the magnetic meridian. The north pole of the compass points to the geographic north pole, and this performance can be used to identify the direction. It is often used in navigation, geodesy, travel and military fields. There is also a band and a movie with the same name.
The principle of the compass The term "compass" actually evolved from the Chinese ancient term "司南". At that time, "司南" indeed referred to the south. Now, the term "指南针" in this context refers to the general direction without any literal specific meaning. The red end of the modern compass points to the north of the Earth. This is because, in accordance with the international standard, the red end of the compass represents the magnetic north and is denoted by N (the white end of the compass represents the magnetic south and is denoted by S). In a compass, the red end N points to the north because the geographic North Pole of the Earth is actually the South Pole of the Earth's magnetic field, so according to the principle of like poles repelling each other, the magnetic north pole of the compass will be attracted to the South Pole of the magnetic field, which is the direction of the geographic North Pole.
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