Xiaocha Xiaoxiao Mingmin fish and sheep from the concave
qubit | public account QbitAI
Zhang Chaoyang is really addicted to being a physics teacher.
I just finished an offline class and pushed the mass-energy equation by hand on the spot , and the entire blackboard wall almost didn't fill.
Does this posture have the style of your big teacher (manual dog head).
There is no place to continue the derivation. Before cleaning the blackboard, I have to say "I can't bear to erase it".
The podium was full of momentum, and the students under the podium also took notes frantically. For example, Li Yongle in the first row was quite serious.
The atmosphere of the online live broadcast is also quite enthusiastic. Although it is an "online class", the students are also very active.
It seems that Teacher Zhang is really not just a stance, but he really has two brushes.
In fact, when it comes to physics, Zhang Chaoyang's qualifications are unparalleled.
In 1986, Zhang Chaoyang graduated from the Department of Physics of Tsinghua University, and in the same year he was admitted to the United States to study on the Li Zhengdao Scholarship. In 1993, he obtained his Ph.D. at MIT, continued postdoctoral work at MIT for three years, and returned to China in 1996 to start his own business.
After being away from physics for more than 20 years, Zhang Chaoyang is actually not unfamiliar. He did not read books for more than an hour, and finally deduced the mass-energy equation E=mc², allowing netizens to see the heartfelt love of an Internet boss for physics.
No wonder some netizens say that when Zhang Chaoyang talks about physics, "there is light in his eyes".
In this class, what exactly is Zhang Chaoyang talking about?
The core content of the speech is the special theory of relativity .
Zhang Chaoyang first deduced the "moving ruler becomes shorter" and "moving clock becomes slower" in the theory of relativity, which is the famous Lorentz transformation.
Then talk about the relationship between mass and speed:
Then the mass-energy equation is derived from the mass-speed relationship, and calculus is used extensively throughout the process, which makes people directly raise the threshold and level of knowledge-based live broadcasting.
Physics teacher Zhang Chaoyang
Before this online get out of class, "Mr. Zhang" had been working in the field of physics popularization for some time.
His first live physics class will start in November 2021.
This was called "the first physics class" by Zhang Chaoyang, which started from the derivation of some basic formulas of mechanics, and finally extended to the current affairs applications such as the Musk spacecraft and the Chinese space station.
The teaching method is not PPT page turning, but like a live chat. Zhang Chaoyang introduced physical formulas while drawing and reasoning on the handwriting board, as if the example questions were all thought of on the spot:
△ Live screen
In fact, before the physics class started, Zhang Chaoyang also taught English class for a while.
However, judging from the content and knowledge points carefully summarized in the title, and the live broadcast duration of nearly 1 hour each time, every physics class of Zhang Chaoyang is truly "come prepared":
△ English lesson playback is a simple default title
For Zhang Chaoyang's first physics class, he received nearly 2,000 interactive comments for the first time. Compared with the average of more than 100 interactions in English classes, it can be said to be very popular.
After that, Zhang Chaoyang's physics class was "out of control". So far, more than 30 courses have been opened. In terms of difficulty, physics is involved from high school to university.
Starting from the course of mechanical physics, the basic concepts such as energy conservation, light scattering, temperature, Planck, and electromagnetic fields are still basic concepts that we have learned in high school physics compulsory and elective courses.
However, the following class titles are almost all college physics terms (a bit of a dazzling rush):
But at the same time, some knowledge points that we have not learned in high school physics, or popular applications of technology that are not in books will also be appropriately extended.
Even Zhang Chaoyang will come to some oral review classes to attract everyone with the explanation method of "no whiteboard, no derivation":
As these physics classes were broadcast live one by one, the reactions of netizens also changed from the "boss's physics class" and "see what the CEO of Sohu looks like in physics classes" at the beginning, to those who tried to understand knowledge. condition:
△ The first class vs two months after the start of the class
"Roll" to the flying popular science circle
It is also a coincidence. Recently, on the famous learning website bilibili, a physics class video rushed to the top ten of the rankings, with 300w+ views.
The protagonist of the video is a gray-haired grandmother who is affectionately called by fans: Grandma Wu .
However, her video content is very hard-core. For example, this latest issue is to explain the law of parity non-conservation .
To say that the law itself, is actually relatively far away from our daily life.
It refers to the asymmetric motion of matter that mirrors each other in weak interactions. It was originally proposed by Li Zhengdao and Yang Zhenning, and was verified by Wu Jianxiong with cobalt 60.
And Grandma Wu stood in front of the mirror, used a little editing magic, and only took 2 minutes to popularize this law for everyone.
This is also her video style as always, using common objects in life as experimental props, and presenting obscure theorems in simple and direct experiments.
Before that, she had already attracted more than one million fans on Station B, Douyin, and Kuaishou, and her ID was called "no questions".
Some netizens even said that after watching Grandma Wu's experiment of frying wires with an induction cooker, she learned Lenz's law that she hadn't understood for three years.
Similar to Zhang Chaoyang, this grandma Wu was also born in the Department of Physics, and also has a great background.
Her name is Wu Yuren, a retired physics professor at Tongji University, who served as the director of the physics demonstration laboratory and the director of the teaching and research section.
Since his father was the first generation of astronauts in China, Wu Yuren slowly learned the knowledge of physical science in his life since he was a child.
From behind the physical videos of the two of them, it can be seen that knowledge and learning content are gradually breaking out on major video platforms.
In fact, there are still many academia gurus who have been working hard to do popular science.
For example, another acquaintance in the physics popularization area, Professor Zhao Zheng from the Department of Physics of Beijing Normal University, has been engaged in the study of relativity and black holes for many years, and has published more than 100 papers in related fields.
There is also Wang Pinxian , an academician of the Chinese Academy of Sciences and a professor at the School of Ocean and Earth Sciences of Tongji University .
Netizens commented on his knowledge of popular science and geography, as interesting as grandpa telling stories.
It seems that now the major video platforms are really turning into learning bases.
By the way, do you have any secret popular science bloggers?
Welcome to leave a message and share in the comment area~
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