A hardcore lesson for the beginning of the school year! Zhang Chaoyang will return to Beijing Normal University with hard-core physics courses

On September 20, “Zhang Chaoyang’s Physics Class” will once again enter Beijing Normal University, a century-old university, and start offline physics lectures in universities around the theme of “Gradient and Differential of Tensors”. On the occasion of the start of the school year, Zhang Chaoyang, founder, chairman and CEO of Sohu and Ph.D. in physics, will visit Beijing Normal University to talk face-to-face with students from Beijing Normal University about physics and learning. This offline class will be broadcast live in its entirety. Netizens can search for the “Zhang Chaoyang” account on the Sohu video follower stream to watch simultaneously and immersively experience the unique charm of basic physics.

How did Einstein understand time and space? The answer starts with a “malfunctioning” mathematical tool. In a flat three-dimensional space, the ordinary derivative works well, but once it enters a four-dimensional curved space-time, it fails. How to describe the movement and changes of matter? What can become the anchor of human cognition? The most critical step is to re-modify those accustomed differential rules. Modified tensor calculus became the language to describe the nature of gravity. It was with the help of the tensor tool that Einstein broke Newton’s absolute view of space and time and unveiled the mystery of gravity.

This is not the first time that “Zhang Chaoyang’s Physics Class” has landed at Beijing Normal University. As early as 2024, Zhang Chaoyang was invited to be a guest at the Beijing Normal University’s “Study and Self-cultivation” Beijing Normal University Lecture Hall. With the theme of “General Relativity Solution in the Interior of Stars”, he delivered a hard-core open class with both professional depth and popular science.

Since its launch in November 2021, “Zhang Chaoyang’s Physics Class” has broadcast more than 290 live classes, more than 30 offline classes, and more than 30,000 minutes of online time. The content covers classical mechanics, electromagnetism, quantum mechanics, general relativity, etc., and has been given at Tsinghua University, Hong Kong University of Science and Technology, Xi’an Jiaotong University, Chongqing University and other universities.

From Tsinghua University to Hong Kong University of Science and Technology, and then to the Capital Academy, Zhang Chaoyang moved the hard-core physics classes online to the university lecture hall. He insisted on writing on the blackboard on the spot and conducting rigorous step-by-step deductions, leading young students into cutting-edge physics fields such as quantum mechanics, general relativity, and differential geometry. Each offline special session of colleges and universities will be broadcast simultaneously on Sohu Video Follower Stream, so that physics learning is no longer limited to the ivory tower. Physics enthusiasts all over the network can think together and perform simultaneous deductions without leaving home, and immersively experience the hard-core charm and unique fun of basic physics.

In addition to continuing to enter colleges and universities, “Zhang Chaoyang’s Physics Class” also continues to broaden the boundaries of science popularization and integrate with international cutting-edge scientific research. From 2024 to 2026, “Zhang Chaoyang’s Physics Class” will carry out a scientist dialogue series for three consecutive years, allowing more physics enthusiasts to have zero-threshold access to cutting-edge basic science through live broadcasts and have a glimpse of the world’s top physicists.

Just this August, “Cheung Chaoyang’s Physics Class” has completed three major cutting-edge dialogues: On August 12, it joined hands with Professor Liu Ruowei of the University of Pennsylvania to dismantle the wonderful emergence laws of disordered systems such as sand piles and bubbles; on August 18, it had a dialogue with Subir Sarkar, Professor Emeritus of the University of Oxford, to discuss the controversy and academic boundaries of the Standard Model of Cosmology; on August 25, it had an in-depth exchange with Professor Wen Xiaogang of the Massachusetts Institute of Technology, focusing on cutting-edge research in condensed matter physics.