Is China s earliest guide tool Sinan or guide car?

The earliest "compass" During the Warring States Period, the people of our country used magnets to create a tool called "Sinan" to indicate the direction.

It's Sinan.

It should be a guide car! The Yellow Emperor created the direction tool of the Great War Chiyou!!

Zu Chongzhi. Zu Chongzhi (429 500 years), the name Wenyuan, was born in Jiankang County, Danyang County (now Nanjing, Jiangsu), and was born in Fanyang County, Luoxian County (now Laishui County, Hebei Province), an outstanding mathematician and astronomer during the Northern and Southern Dynasties. Born in the Fan Yang Zu clan.

He devoted his life to the study of natural sciences, and his main contributions were in mathematics, astronomical calendar, and mechanical engineering. On the basis of the precise method of exploring pi pioneered by Liu Hui, he actuarially calculated pi to the seventh decimal place for the first time, that is, between and , and the "ancestral rate" he proposed made a significant contribution to the study of mathematics.

It wasn't until the 16th century that the Arab mathematician Al Qasi broke this record with a shack. The "Da Ming Calendar" written by him was the most scientific and progressive potato calendar at that time, and provided a correct method for the study of the number of days and travel texts in later generations. His main works include "Anbian Treatise", "Fixation", "Narrative of Differences", "Calendar Discussion" and so on.

Guide car. The inventor is Zu Chongzhi.

It is also known as Sinan car. The guide car is a simple mechanical device that uses gear transmission to point out the direction, and its principle is to rely on manpower to drive the two-wheeled guide car to walk, thereby driving the wooden gear in the car to rotate, to transmit the difference between the two wheels when steering, and then to drive the wooden man on the car to point to the opposite angle of the direction of the car and the direction of the car, so that the wooden man on the car indicates the direction.

The guide car is a kind of vehicle that indicates the direction in ancient China, and it is also used as the honor guard vehicle of the emperor. The specific era of the origin of the guide car is unknown, and it has been lost several times in the past dynasties and remade several times, but there is no information on the specific structure, and the structure of the guide car may not be the same in the past dynasties, and there is no more complete information until the Song Dynasty.

Profile. Zu Chongzi Wang Zhi (429 500 years), the word is far away.

A native of Fanyang County (now Laishui County, Hebei Province), he was an outstanding mathematician and astronomer during the Northern and Southern Dynasties, and his main contributions were in mathematics, astronomical calendars and mechanical manufacturing. He is in Liu Hui.

Pioneering exploration of pi.

On the basis of the exact method, for the first time the "pi" was actuarially calculated to the seventh decimal place, i.e. between and . In addition to the guide car, he also wrote the "Great Ming Calendar", invented the water mill, the Qianli Nian bureau boat, and the timer. In honor of Zu Chongzhi, in 1967, the International Federation of Astronomers put the moon.

One of the craters on it is named "Zuchong no Crater".

There are four theories of the inventor of the guide car:

1. "Ancient and Modern Notes" written by Cui Bao of the Western Jin Dynasty

and "Zhilin" and other ancient books say that the Yellow Emperor.

When fighting with Chiyou, Chiyou made a fog, and the Yellow Emperor built a guide car to lead the way for the soldiers.

2. "Ancient and Modern Notes" and "Guiguzi".

and other ancient books say Zhou Gong.

That is, the younger brother of Zhou Wuwang) as a guide car, because the "Yue Shang clan" came to pay tribute, lost the way back, Zhou Gong made the "five times" guide Li Juexian car, for them to guide the way.

3. Liu Xianzhou said in his book "The First Part of the History of Chinese Mechanical Engineering Inventions" that the invention of the guide car should be based on the ancient book "Xijing Miscellaneous Records".

The record is based on the Western Han Dynasty.

4. Wang Zhenduo said in his book "Science and Technology Archaeology Forum" that the creator of the guide car should be credible when Ma Jun of the Three Kingdoms, and quoted "Wei Luo".

to prove it.

How the guide car works

Legend has it that there is a set of automatic clutch gearing mechanism inside the trunk. When the car deviates from the southerly direction and turns left to the east, the front end of the east wheel moves to the left.

The rear end moves to the right to the west, that is, the right transmission gear is dropped, so that the rotation of the wheel can drive the large gear under the wooden man to turn to the right, which just offsets the impact of the vehicle turning to the left, so that the wooden man's arm is still in the direction.

1. The guide car was invented by Ma Jun during the Three Kingdoms.

2. The guide car is a device used to indicate the direction in ancient China. The principle of the guide car is to rely on manpower to drive the two-wheeled guide car to walk, so as to drive the wooden gear in the car to rotate, to transmit the difference between the two wheels when steering, and then to drive the car to point to the wooden man and the direction of the car steering at the opposite angle of the same, so that the wooden man on the car indicates the direction, no matter where the car turns, the hand of the wooden man always points to the direction indicated by the wooden man when the guide car departs, "although the car is back and the hand is boring often guide".

3. The invention of the guide car was earlier. According to legend, it was invented in the Western Zhou Dynasty, but the earliest exact record is in the Three Kingdoms period. Historical texts show that during the Three Kingdoms, Ma Jun was the first person to successfully build a guide car.

Since the Three Kingdoms period, almost all the history books of the past dynasties have recorded the sharp bend of the guide car, but it is relatively brief. It was not until the Song Dynasty that there was complete information, and its internal structure is recorded in more detail in the History of the Song Dynasty.

The inventor of the guide car is Ma Jun. A guide car is a simple mechanical device that uses gear transmission to point out directions. Its principle is to rely on manpower to drive the two-wheeled guide car to walk, from the trace trousers and drive the wooden gear in the car to rotate, to transmit the difference between the two wheels when steering, and then drive the car to point to the wooden man and the direction of the car to turn at the opposite angle of the same angle, so that the wooden man on the car indicates the direction.

The guide car is a kind of vehicle that indicates the direction in ancient China, and it is also used as the emperor's honor guard vehicle. The specific era of the origin of the guide car is unknown, and it has been lost several times in the past dynasties and remade several times, but there is no information on the specific structure, and the structure of the guide car in the past dynasties is not the same, and there is no more complete information until the Song Dynasty.

Profile.

There are four theories about when the guide car appeared and who inventors:

1. Ancient books such as "Ancient and Modern Notes" and "Zhilin" written by Cui Bao of the Western Jin Dynasty say that when the Yellow Emperor fought with Chiyou, Chiyou made a heavy fog, and the Yellow Emperor built a guide car to lead the way for the soldiers.

2. Ancient books such as "Ancient and Modern Notes" and "Guiguzi" say that the Duke of Zhou (that is, the younger brother of King Wu of Zhou) made a guide car because the "Yue Shang clan" came to pay tribute and lost the way back.

3. Liu Xianzhou said in his book "The History of Chinese Mechanical Engineering Inventions (Part I)" that the invention of the guide car should be based on the records of the ancient book "Xijing Miscellaneous Records" and be designated as the Western Han Dynasty.

Fourth, Wang Zhenduo said in his book "Science and Technology Archaeology Forum" that "the creator of the guide car, when the Three Kingdoms Ma Jun is credible", and quoted the record of "Wei Luo" to prove it.

When the emperor fought Chiyou, the emperor's formation was invented.

The Yellow Emperor, that's what the textbooks say.