The compass is one of the four great inventions of ancient China, the development of the science and technology and the invention of human civilization, plays an immeasurable role. In ancient Chinese compass, initially used inritual, ceremonial, military and divination and geomancy to determine azimuth. At the end of Eleventh Century or early twelfth Century, the ship began to use the compass navigation China. The Northern Song Dynasty, "Ping": onthe boat (helm) knowledge of geography, night stargazing, day day, dark view compass."
东E 南S 西W 北N 〔有一Ju话:来在北方的你(N)穿着冬天的大衣(E)Lai到南斯(S)拉夫寻找Wc(西)〕 Zhe常就容易记了.
The compass A compass is a simple instrument discrimination range,also known as thecompass,according to "record" on the earliest records appeared in the Warring States period magnetic mountain area.The compass was formerly one of thefour great inventions of ancient China's compass,is the result of ancient Chinese labor people understanding of magnetic objects in the long-term practice. The main components are mounted on a shaft can freely rotate the needle,the needle can remain in the tangent magnetic radial direction on the ground under the action of magnetic field,magnetic needle points to the geographical North pole pole,direction can be identified by this performance.Commonly used in navigation,geodesy,travel and military etc.. Zhi南针 指南针是一个简单的仪器歧视的范Wei,也被称为指南针,根据"；记录"；对Ji载最早出现于战国时期磁山地区.指南Zhen的前身是一家中国古代四大发明的指南针,是中国Gu代劳动人民在长期的实践中的磁性物体的理Jie结果. 主要部件安装在轴上可以自You转动的磁针,针能保持在磁子午线的切线方Xiang上的磁场的作用下,地面,磁针指向地理北极Ji点,利用这一性能可以辨别方向.常用的导航,大Di测量学,旅游和军事等.
A compass is an instrument used for navigation and orientation that shows direction relative to the geographic "cardinal directions", or "points". Zhi南针是一种用於指示方向的工具，广泛Ying用於各种方向判读和定位的仪器，显示方向相对于Di理“基本方向”，或“点”。
中国是举世公认的发明compass的国Jia。最初的指南针叫做 Sinan, a south-pointing ladle,Chu现在战国时期。一般在指南针上标有东南西Bei四个方位，并且还有刻度。北对应零度，刻Du随顺时针方向而增加。作为中国古代的四大Fa明之一，指南针对人们的生活，尤其是航海Ye的发展，起到了重要的作用。指南针对西方Shi界也产生了显著的影响，这些国家由此开始Liao大规模的海外冒险活动。 China is widely recognized as a country with the invention of compass. The initial compass is called a, south-pointing ladle Sinan, which appeared in the Warring States period. There are four directions of the compass in the southeast and northwest superscript, and scale. The corresponding zero scale with clockwise increases. As one of the four great inventions of ancient China, compass on people's life, especially the development of shipping industry has played an important role. The compass also has significant impact on the western world, these countries began a large-scale overseas adventure.
No matter where you stand on Earth, you can hold a compass in your hand and it will point toward the North Pole. What an unbelievably neat and amazing thing! Imagine that you are in the middle of the ocean, and you are looking all around you in every direction and all you can see is water, and it is overcast so you cannot see the sun... How in the world would you know which way to go unless you had a compass to tell you which way is "up"? Long before GPS satellites and other high-tech navigational aids, the compass gave humans an easy and inexpensive way to orient themselves. But what makes a compass work the way it does? And why is it useful for detecting small magnetic fields, as we saw in How Electromagnets Work? In this article, we will answer all of these questions, and we'll also see how to create a compass from scratch! A compass is an extremely simple device. A magnetic compass (as opposed to a gyroscopic compass) consists of a small, lightweight magnet balanced on a nearly frictionless pivot point. The magnet is generally called a needle. One end of the needle is often marked "N," for north, or coloured in some way to indicate that it points toward north. On the surface, that's all there is to a compass. The reason why a compass works is more interesting. It turns out that you can think of the Earth as having a gigantic bar magnet buried inside. In order for the north end of the compass to point toward the North Pole, you have to assume that the buried bar magnet has its south end at the North Pole, as shown in the diagram at the right. If you think of the world this way, then you can see that the normal "opposites attract" rule of magnets would cause the north end of the compass needle to point toward the south end of the buried bar magnet. So the compass points toward the North Pole.
N指north 北方 E指east东Fang W指West西方 S指southNan方 10~360度是从北方向开始顺时针Shu,相应的,90°指“东”,180°指“南” 270°Zhi“西”360°（0°）指“北”其实这就是“Fang位角” 维度分南纬和北纬,北半球是北纬,90°N,Nan半球是南纬,90°S,0度纬线就是赤道. Jing度分东经和西经,各有180度,0度经线是Zai英国的本初子午线. 经纬度划分了之后,可Yi利用它来定位地球上的任意一点的位置.
compass 您的支持就是我继续前Xing及帮助别人的动力 愿您与我共同携手传播『 Ai心 』之种 望采纳↖(^ω^)↗