1. The difference between the compass and the compass

The compass is also known as Sinan. The main component is a magnetic needle installed on the axis. Under the action of a natural magnetic field, the magnetic needle can be rotated freely and kept on the cut line of the magnetic meridian.Performance can distinguish the direction.Commonly used in navigation, land measurement, travel and military.The invention of the compass in the direction of physical indications consists of three components, which are Sinan, compass, and magnetic needles, all of which belong to the invention of China.

Feng Shui compass, also known as compass, Luo Jing, Luogeng, Luo Jingpan, etc., consisting of Tianchi (compass), Tianxin ten and inner plates. The entire disc can rotate back and forth.Tool.In addition, it also has the effect of blocking evil luck. For families with poor home transportation, they can be placed in the direction of north and south and placed in the financial position of the home or the middle of the living room., Improve Jiayun.

Ancient Chinese compass is divided into coastal and mainland types. The coastal production site is Zhangzhou and Xingning, Fujian, and is used for navigation.The main producing area of the Mainland is Wanan's Feng Shui compass, which is used to determine the orientation and layout of house buildings and tombs.

The ancestors of the compass and the compass are the same. They are all called Sinan. Sinan also has a lot of information. Later, according to the different effects, the guide needle focuses on the direction, and the compass was used by Mr. Feng Shui.The detailed angle is also a kind of compass.

There are more functions of the compass than the compass. The compass can only be used to judge the direction. The compass also has measured inclination and tendency. The compass is developed on the basis of the compass!

Second, Sinan and the compass, who invent first

Sinan was the earliest recorded in the late Warring States Period. The compass was the Southern song Dynasty, so Sinan was earlier.

1. Which country was invented by the suspension?

The Hammock or the so -called "floating bed" was invented by the residents of Central South America before the European or the ancient Greek Romans. Early Indians were sleeping on these suspenders and carried them with them.

Annisiamary Selingger, an ethnicist and textile researcher, tells such a possibility in her work, that is, the Indians use vine, liliary leaves, palm leaves, and later cotton cotton hammocks.In cold areas like Colombia, Indians use animal Skin and hair to make warm suspension.

In 1500, Columbus and Ameigo Vest Pich brought this novelty from the jungle back to Europe. For the first time, they saw these unusual original "floating beds".It is very popular.

After Columbus showed the magical beds of the Indians to all aristocratic Europeans, most people did not see any meaning of them.However, 50 years later, the Hammock became popular throughout Europe. By the end of the 16th century, the crew of the British Elizabeth I almost swayed on the Hammock.The Royal Navy in England formally adopted canvas hammocks in 1597 as the main sleeping place for each sailor on the warship turret.

2. What are the reasons for invented the Hammock?

The Hammock was invented by the residents of Central and South America, and it is generally considered by the Indians or Tyrots, so why do they invent the Hammock?

In fact, the invention of the Hammock was mainly for safety. At that time, people lived in the jungle. The attacks of the humid environment, insects and poisonous snakes troubled people.It can protect people in sleep without being affected by the humid environment, not being attacked by insects and poisonous snakes.