He was a great inventor in the Eastern Han Dynasty in China. There were numerous inventions in his life, among which the most famous one was the seismograph.

Seismograph recovery map

Earthquakes often occurred in the Eastern Han Dynasty, ranging from houses to landslides to river diversions, which caused great losses to people. As an official, Zhang Heng experienced many earthquakes and knew people's sufferings. Therefore, after many studies and repeated verification, he finally invented the world's first seismograph.

the full name of the seismograph is Hou Feng seismograph, which is drum-shaped with eight directions on it. In each direction, a lifelike dragon is cast, with the faucet facing down and a copper bead in its mouth. There are eight toads under the tap, with their mouths open and their heads held high. There is a copper column in the seismograph, and the mechanism on the column is connected with the dragon. When an earthquake occurs somewhere, the copper column in the seismograph will shake, the copper beads will drive the mechanism, and Longkou will spit out the copper beads.

in December 134, the seismograph suddenly shook slightly, and a dragon spit out a dragon ball. At this time, people in Luoyang couldn't feel the earthquake at all, so they began to question the seismograph. People don't trust Zhang Heng, thinking that it's just a toy. Others think that Zhang Heng made it up out of thin air and made malicious rumors. At that time, rumors spread everywhere, but Zhang Heng was not in a hurry to defend himself, just waiting and seeing. Sure enough, a few days later, someone came to Longxi, Gansu Province to pass the news, saying that a big earthquake did happen there a few days ago. The doubts vanished in an instant, and the seismograph became famous all over the world.

Of course, the seismograph, invented more than 1 years ago, can only record the approximate location of the earthquake. It cannot predict earthquakes, nor can it monitor earthquake magnitude. But we should be proud of it. Our ancestors used to be so wise and dare to practice, which is worth learning by all people now.

what did Zhang heng, an astronomer in the eastern Han dynasty, achieve?

Some people in this world are interested in everything and want to participate in everything, but they often have only half a bucket of water.

Zhang Heng invented the armillary sphere

But Zhang Heng, the most outstanding astronomer in China's history, was proficient and refined. Of course, this is also related to his family education since childhood. His grandfather was a famous Zhang Kan, who made great achievements in his early years. Zhang Hengren was clever and hands-on, and invented many things, such as seismograph, armillary sphere, Swiss wheel pod and so on. Among them, the seismograph is his most famous masterpiece. The seismograph was invented by him when he was in Taishiling. Although it is only a prototype, it can only roughly identify the direction of the earthquake. But don't underestimate it. This guy is 18 years ahead of the world and is the father of seismic instruments. Therefore, it is well-deserved to evaluate Zhang Heng as a great inventor. In his spare time, Zhang Heng also imitated the works of some literary masters and was known as a great writer. However, others imitated it well, among which "Erjing Fu" was called a masterpiece by later generations. It is no exaggeration for Zhang Heng to become a great writer. Zhang Heng also played an important role in history. During this period, he participated in a

historical sequel to Han Ji. Ideologically, he made two sacred objects, namely automatic three-wheeled machinery and flying woodcarving. In mathematics, he wrote "The Theory of Calculations" and drew a picture of "Topographic Map" that still existed in the Tang Dynasty. Zhang Heng has made great achievements in various disciplines, adding a lot of wealth to China's splendid cultural heritage, which can be called China's masterpiece.

What are the famous sayings of Zhang Heng, one of the four masters of Han Fu?

Zhang Heng is a famous astronomer, mathematician and inventor in the history of China. In fact, Zhang Heng has an identity unknown to ordinary people. He is actually a very good writer.

Statue of Zhang Heng

Zhang Heng is talented. Before he was five years old, he could write, and his neighbor told him a widely circulated story. When Zhang Heng was in his teens, he left his hometown to study in Luoyang City, where he entered imperial academy, the highest institution comparable to Tsinghua Peking University today. During his studies, Zhang Heng was meticulous and studious, and made friends with various writers in his spare time. This experience laid a very good foundation for Zhang Heng to write poems and become a writer in the future.

Zhang Heng's best works include Fu to the Second Capital, Returning to Talent, Being Leisure and so on. The typical characteristics of his articles are rich and beautiful rhetoric and profound implication, so many famous aphorisms were born.

Today, 1 years later, no matter whether you wander around the university campus or the park path, as long as you can see the statue of Zhang Heng, you can generally see the following sentence: You can't get anything from your efforts. This is Zhang Heng's most famous sentence, which has encouraged many lost people for thousands of years. This sentence comes from "Should Be Idle", which means that one must work hard all one's life and always keep a heart for knowledge in order to gain something.

there is also "being expensive means virtue, while being expensive means valley". This sentence comes from "Tokyo Fu" in "Erjing Fu". What Zhang Heng means is that precious things are nothing more than Germans, and precious things are nothing more than food. It embodies Zhang Heng's thirst for talents and his childlike heart for the sufferings of the people.

As future generations, we should not only lament Zhang Heng's wonderful workmanship, but also deeply understand these famous aphorisms of Zhang Heng. Every word during the period is a philosophy of dealing with people, which is worth pondering over.