What three things did Zhang Heng invent in his life?

1. Geodynamic instrument.

The geodynamic instrument is Zhang Heng, a scientist from the Eastern Han Dynasty in China.

A masterpiece of creation. Zhang Heng lived in the Eastern Han Dynasty.

**More frequent. Zhang Heng has a lot of personal experience in **, in order to grasp the national ** dynamics, he after years of research, and finally in the first year of Yangjia (AD 132) invented the wind geodynamic instrument, which is also the world's first geodynamic instrument.

The geokinetic instrument has eight directions, each of which has a dragon head with a dragon ball in its mouth, and a toad underneath each dragon's head.

and its counterpart. If there is a ** occurrence on either side, the dragon ball contained in the dragon's mouth in that direction will fall into the toad's mouth, so that the direction of the occurrence of ** can be measured.

2. An improved version of the armillary sphere.

On the basis of the armillary sphere invented by Geng Shouchang in the Western Han Dynasty, Zhang Heng created a "armillary sphere" that was much more accurate and comprehensive than before.

A leaky armillary sphere is a water-borne turbidity. A bronze ball more than four feet in diameter was used, and twenty-eight knakshatras were engraved on it.

Chinese and foreign stars, as well as the yellow equator, the north and south poles, and the 24 solar terms.

Constant display circle, constant hidden circle, etc., into a muddy image, and then use a set of rotating machinery to combine the muddy image and the leaky pot.

Control the muddy image with a leaky pot of flowing water, so that it is in harmony with the celestial sphere.

Synchronized rotation to show the apparent movement of the starry sky on Sunday, such as the appearance of stars and the mid-heaven. It also has an appendage, the Ruilun Underworld, which is a mechanical calendar, connected by a transmission and an elephant, which produces one leaf per day from the beginning of the month; After a month and a half, one leaf falls every day. The two-stage slotter used is the earliest known record of a two-stage slotter.

3. Guide car.

The guide car manufactured by Zhang Heng uses the mechanical principle and the transmission of gears, and consists of a two-wheeled unicycle car. The trunk uses a gear system that can be automatically clutched, and a woodcut fairy is placed on the upper layer of the trunk shell, and no matter which direction the car turns, the wooden man's outstretched arm points south.

Zhang Heng, the word Pingzi, one of the five saints of Nanyang, and Sima Xiangru, Yangxiong, and Ban Gu are known as the four masters of Han Fu. He was a great astronomer, mathematician, inventor, geographer, and writer of the Eastern Han Dynasty in China. He invented the armillary sphere and the geokinetic instrument, and made outstanding contributions to the development of Chinese astronomy, mechanical technology, and science.

Celestial, geodynamic, compass.

Geokinetic instrument, armillary sphere, guide car.

Zhang Heng invented the armillary sphere and the geodynamic sphere, and made outstanding contributions to the development of Chinese astronomy, mechanical technology, and science. Zhang Heng is one of the representatives of the armillary theory in the middle of the Eastern Han Dynasty, and is known as the "Wood Saint" by later generations, because of his outstanding contributions, the United Nations Astronomical Organization named a crater on the far side of the moon "Zhang Heng Crater", and the asteroid No. 1802 in the solar system was named "Zhang Hengxing".

Zhang Heng invented the armillary sphere, the geodynamic instrument, the ruilun pod, the guide car, the Jili drum car, the solo flying wood carving, and the topographic map. Zhang Heng was a great astronomer, mathematician, inventor, geographer, and writer in the Eastern Han Dynasty. In astronomy, Zhang Heng is the author of "Lingxian" and "Armillary Illustrium"; Mathematical works include "The Theory of Arithmetic"; Literary works are represented by "Erjing Fu" and "Guitian Fu", etc., and are known as the "Four Masters of Han Fu" together with Sima Xiangru, Yang Xiong, and Ban Gu.

Zhang Heng, whose name is Pingzi, a native of Nanyang and Xi'e, has studied hard since he was a child, and left his hometown to study abroad after the age of 16. At the age of 22, Zhang Heng was invited by Nanyang Taishou Baode to become the chief bookkeeper, in charge of clerical work, and since then he has entered the official career. At the age of 58, he was transferred to serve as the state minister of Liu Zheng, the king of Hejian.

In 139 AD, Zhang Heng died of illness at the age of sixty-two.

Zhang Heng has made outstanding contributions to the development of Chinese astronomy, mechanical technology and science, and is one of the representatives of the armillary theory in the middle of the Eastern Han Dynasty, and is known as the "Wood Saint" by later generations, because of his outstanding contributions, the United Nations Astronomical Organization named a crater on the far side of the moon "Zhang Heng Crater", and the 1802 asteroid in the solar system was named "Zhang Hengxing". In order to commemorate Zhang Heng, the descendants built the Zhang Heng Museum in Nanyang.

Zhang Heng - Ground motion instrument

Zhang Heng invented the earliest geodynamic instrument during his tenure as Taishi Ling, called the Houfeng geokinetic instrument. According to the "Book of the Later Han Dynasty, the Biography of Zhang Heng" records: the geodynamic instrument is cast with fine copper, with a circular diameter of eight feet, the top cover is protruding, the shape is like a wine bottle, and it is decorated with the image of turtles, birds and beasts in the Seal Wen Mountain.

There are big pillars, and there are eight roads to close, and the machine is closed. It has eight directions, each with a dragon with a copper bead in its mouth, and a toad corresponding to each dragon. If there is a ** occurrence on either side, the copper beads contained in the dragon's mouth in the direction will fall into the mouth of the toad, so that the direction of the occurrence of ** can be measured.

Zhang Heng was a great astronomer, mathematician, and inventor in the Eastern Han Dynasty of China, and was known as the Four Masters of Han Fu together with Sima Xiangru, Yang Xiong, and Ban Gu. He invented the geodynamic instrument, the guide car, and also improved the armillary sphere, which was praised as the wooden saint by later generations.

In 132 AD, Zhang Heng invented the earliest geodynamic instrument, that is, the wind geodynamic instrument. It has eight directions, each of which has a dragon with copper beads in its mouth, and a toad with a mouth corresponding to it under the dragon, as long as there is a ** occurrence on either side, the copper beads contained in the corresponding dragon's mouth will fall into the toad's mouth.

The armillary sphere is an improvement on the basis of the armillary sphere invented by Geng Shouchang in the Western Han Dynasty, which is mainly used for observing celestial bodies. The function of the compass car is almost the same as that of the modern compass, mainly composed of one or two two-wheeled chariots, and no matter which direction the car is facing, the arms of the wooden man inside are pointed south.