Fortune Telling Collection - Free divination - What directions do the compass n and s represent respectively?
What directions do the compass n and s represent respectively?
Extended information 1. Compass:
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 north pole of the magnetic needle points to the geographical north pole, and we can use this property to identify the direction.
It is often used in navigation, geodesy, tourism and military affairs. 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.
Reference Baidu Encyclopedia Compass
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