According to @杨正 News, recently, when Zhang Chaoyang was talking about physics questions live, he proposed a potential field question that generally calculates a constant-speed moving charge for netizens to answer. uses an iPhone 14 as the answerer's prize .
This question was solved by a girl from , Nanjing Normal University, , physics major. The student said that he was preparing for the postgraduate entrance examination recently and would take time to see physics classes. He found it very interesting, so he tried to answer it.
Image source: Video screenshot
On the evening of September 15, related topics became popular on Weibo.
Zhang Chaoyang gave physics questions to test only one netizen answered: Reward one iPhone 14
Recently, in the live physics class, Zhang Chaoyang proposed a potential field question that generally calculates the constant-speed moving charge to test netizens, and promised that if netizens can answer correctly, will give him an iPhone 14 as a prize to him.
Finally, a female college student from Jiangsu gave the correct answer and said that she was taking the postgraduate entrance examination, so she would study physics courses and found the answer by referring to textbooks.
Image source: Video screenshot
In an interview, this classmate said that he likes physics more and found it very interesting. When he first came into contact with this question, he thought it was quite simple, just write out the electromagnetic field, but in the subsequent answers, he found that the question was really difficult to .
Partial disintegration steps
But I was quite stubborn, and finally I changed my thinking by referring to the textbook and drawing a picture to solve this problem.
The student also said that he was preparing for the postgraduate entrance examination recently and would only go to the live broadcast of (Zhang Chaoyang) during rest. He also said that he spoke very well and that for the material rewards she received, she responded very humorously that through this form, more people can understand the existence of the classroom, and many people can realize that "it turns out that reading has this kind of use."
According to @Zhang Chaoyang Physics class, in Zhang Chaoyang's physics class on September 11, Teacher Zhang explained the electromagnetic field and relativity effect of moving charges, and put forward a question that requires calculating the potential and magnetic vector potential of uniform moving charges in the entire space. This question was solved by a girl from Nanjing Normal University's physics major. Her solution idea was to explicitly calculate the points of the delay potential, and finally gave a complete expression successfully. Congratulations to this student for getting one iPhone 14~
Netizens said: "I should be able to go back to high school," "This physics question seems to be reading in English", "Can you start from basic teaching?"...
Physics class has been live for more than 80 issues and has also popularized science. iPhone 14 color matching
According to Consumer Daily, as of now, "Zhang Chaoyang's Physics Class" has been live for more than 80 issues, with rich content and wide coverage, and theoretical formulas have been blended from shallow to deep, and the combination of traditional and simple. Since the first physical live class started in November last year, he first started from classical physics and popularized Newton's law of motion , etc.; then started from the "two dark clouds" of classical physics, and transitioned to modern physics, and discussed the knowledge of Vinne formula, Planck formula and other knowledge in bold radiation theory.
Then, gradually entered the field of quantum mechanics , from the basic theoretical contents of Schrödinger equations, to the hydrogen atomic wave function, to the temperature ladder of gas fixed capacity specific heat, and explained the thermodynamics law in the same manner. Then we return to classical physics, deduce the trajectory of the spacecraft , estimate the structure and properties of the sun and the rotation speed of the neutron star , then explain the precession of the gyro, and calculate the tidal height of the moon. Now we will start to explain some mathematical tools and prepare to enter general relativity .
In addition, Zhang Chaoyang recently popularized the purple color scheme of the iPhone 14 series in physics class, which means that this color does not exist in of the spectrum.
According to Zhang Chaoyang, purple does not actually exist in the sun spectrum of . When the human eye sees purple, it needs to re-substitute the spectrum, so purple in the iPhone 14 series is relatively rare and impressive. In addition, Zhang Chaoyang also said that the iPhone 14 series has many powerful functions and the styling design is also very good.
The live broadcast style of "Zhang Chaoyang's Physics Class" is unique: it focuses on derivation, and through step-by-step detailed mathematical calculations, the relevant physical formulas are derived, and each formula is disassembled very clearly from beginning to end.
In addition to "Zhang Chaoyang's Physics Class", in terms of live broadcast, Sohu Video is continuing to build a knowledge live broadcast platform, inviting top broadcasters from various scientific fields to join in and conduct popular science knowledge live broadcast. Including , an expert from the China Academy of Launch Vehicle Technology, Qian Hang, who live broadcasts the history of the development of aerospace industry; , a teacher at the School of Science, Beijing Jiaotong University, , Chen Zheng, , a doctoral degree in online classes - "Interesting scientific experiments"; , a doctoral degree in genomics, and founder of the Yuancode gene, Tian Geng explained the close connection between genomics and life; , astrophysics, , astrophysics, , Liu Boyang, a doctoral degree in science, popular science "How does solar total eclipse produce", etc. In the future, more knowledge broadcasters will join Sohu Video to interact and play science together.
Netizen: All internal mental friction has been cured
According to Jimu News, recently, "Zhang Chaoyang's Physics Class" which has been on Sohu Video for more than half a year, broadcasting it synchronously on Douyin for the first time, focusing on electromagnetic , which lasted more than two hours, and attracted more than 50 million people to watch online.
Watch Zhang Chaoyang has been a "Internet boss" for many years, and many people don't know that he actually graduated from from the Department of Physics of Tsinghua University and obtained a doctorate degree from MIT . Zhang Chaoyang talks about physics, but in fact it is a professional counterpart and returns to his original intention.
In this lesson on Douyin, he fully implemented his opinion: "Physics is calculated". After introducing the process and significance of human discovery and application of geomagnetic waves, he began to deduce formulas smoothly on the blackboard. While talking about professional terms such as vector calculus, scattered number theorem, Stokes theorem, Kulun theorem, Gaussian theorem, , and quickly wrote six blackboards to deduce the famous Maxwell equations .
Many netizens said that watching this live broadcast, the most exciting thing is when the formula derivation is successful. I feel refreshed and sunny. 's internal internal friction has been cured. Perhaps, this is the magic of knowledge, this is the magic of science.
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