Recently, a video of a physics teacher roaring a cup of wine has attracted many netizens to admire: the lion roar in the martial arts movie has reappeared!

In the video, a male teacher shouted at the goblet for less than 7 seconds, and the cup broke in response to the roar. He smiled and said: "Let the cup shatter with dignity." On the evening of August 26, Yangtze Evening News /Ziniu News contacted the teacher Zhu Xiangyang. He is 61 years old and is from Ganzhou, Jiangxi. He is a physics experiment teacher with 42 years of teaching experience.

Zhu Xiangyang said: "This experiment was done to make the physics class more lively and interesting, and to make the knowledge in the books'live'."

　　Yan Chunxu, trainee reporter of Ziniu News

　　Intern Wang Lin

In order to prove the "resonance principle", he worked hard to practice the "lion roar"

　　On the evening of August 26, when talking about the popular video on the Internet, Zhu Xiangyang smiled and said to the Ziniu News reporter: "Where is the'Lion Roar Technique'? This is just a high school physics experiment. This knowledge point in the high school textbook is very important. The important thing is called'resonance'. When this knowledge is mentioned in the textbook, a picture of the moment when a glass wine glass bursts is used."

　　Since 2001, Zhu Xiangyang has been a full-time experimental teacher of physics at Xinfeng Middle School in Jiangxi Province.

Regarding the principle of the "resonance experiment", Zhu Xiangyang, who is experienced in teaching, said: "The wine glass itself has a natural frequency of vibration, and the outside world gives it a driving force, such as sound. When the frequency of the sound is close to or equal to the frequency of the wine glass The cup will resonate, and the cup wall will vibrate strongly. When the cup wall itself cannot withstand it, it will break. This is a simple principle."

　　In the summer of 2014, he saw on TV that foreign children successfully completed the experiment of cracking the glass with empty mouth, so he came up with the idea of ​​moving this experiment to the classroom.

Zhu Xiangyang bought a goblet, but after yelling at the cup for a long time, the cup did not break.

　　Zhu Xiangyang said that although the experiment looks easy, there is still a big gap between theory and practice.

In the summer of 2018, when Zhu Xiangyang happened to see a thin-walled wine glass in the supermarket, he remembered this experiment again.

He bought two wine glasses casually, and wanted to try the experiment of using the resonance principle to smash the wine glasses in an empty mouth again at school.

　　"At that time, I made my voice entirely from my throat, and I didn't expect that the first wine glass would be broken soon." Recalling the scene of the first time he broke the wine glass, Zhu Xiangyang said that it only took 5 minutes at that time.

　　After the experiment was successful, Zhu Xiangyang's confidence doubled, but for the second wine glass, he didn't roar for a long time, and he didn't give up until his voice became dumb.

For the next 10 days, Zhu Xiangyang's throat couldn't make a sound.

After his throat recovered, Zhu Xiangyang tried again.

With his efforts, the second wine glass was finally broken.

In this way, Zhu Xiangyang continued to conduct this experiment for two years, but the success rate was always less than 50%.

During the 2020 epidemic, Zhu Xiangyang, who was idle at home, ordered more than 300 wine glasses from the Internet for experiments.

He said: "I yell at the cup every day when I stay at home. After a period of training, I can sum up my experience of smashing the cup."

　　After more than two months, Zhu Xiangyang broke all the 300 cups he ordered and gradually understood the techniques. It turned out that the success of the experiment was not only related to his own voice, but also had a lot to do with the wine glasses.

He said: "My voice is suitable for wine glasses with a resonance frequency between 600HZ and 800HZ. Not any type of wine glass can be broken. The thickness of the wall of the glass is about 0.8 mm and the diameter of the glass is about 70 mm. It can easily be broken."

In 3 years, he broke thousands of glasses, he is an experimental and innovative expert

　　Since 2018, Mr. Zhu has been practising the experiment of the roaring cup. He told the Ziniu News reporter that he has broken more than 1,000 cups so far. He smiled and said to the Ziniu News reporter: " The success rate of this experiment is now close to 100%. A wine glass only needs to be roared three to four times to break, and it only takes two minutes at most to succeed."

　　The Ziniu News reporter learned that as a full-time experimental teacher, Zhu Xiangyang certainly does not only focus on this experiment. He is also a well-known experimental innovation expert in school. It was all designed by me, and I won a very good place in the competition."

　　In Xinfeng Middle School, there is a classroom dedicated to displaying self-made experimental equipment and teaching aids, most of which are designed and made by Zhu Xiangyang himself. “The materials used in experimental props are all daily necessities, or Some of the waste is split and reorganized with some familiar items around everyone, and then used for teaching after completion."

　　In his years of teaching physics experiments, Zhu Xiangyang discovered that physics is a subject based on experiments. It is difficult for students to understand many laws and concepts only by language.

He said: "Experiments are also a very important way to cultivate students' scientific literacy and practical ability."

After retiring, he was rehired to use short video science physics knowledge

　　In 1979, Zhu Xiangyang became a substitute teacher in the countryside.

In 2021, Zhu Xiangyang, who was supposed to retire, was re-employed by the school to continue to be a full-time physics experiment teacher.

Soaking in the laboratory every day, he enjoys it.

He said: "Experiments have become a part of my life. I enjoy the process of doing experiments, and I don't think it is a burden. I don't think about it when I do experiments, it will reduce a lot of troubles."

　　Recently, Zhu Xiangyang, who is obsessed with physics experiments, also likes the Douyin short video.

In his spare time, he posted some small experimental videos on the Internet, and gained 330,000 fans and more than 3 million likes from netizens.

Among them, the experimental video of the paper cup phonograph was praised by 1.84 million netizens.

　　Zhu Xiangyang told the Ziniu News reporter that he also has two WeChat groups, in which there are nearly a thousand physics teachers and physics enthusiasts from all over the country, "We often conduct experimental exchanges in the group, and many teachers also ask me for advice. I will also take the initiative to share the experimental skills of the Houcup.” In order to increase the interest of the group of friends, sometimes Zhu Xiangyang will use pots, fish tanks and other containers for experiments.

　　"I don't want to get traffic by publishing videos. The main purpose is to save the videos of experiments I have done, and also to communicate and share the fun of experiments with netizens." As the number of fans gradually increased, Zhu Xiangyang also felt the burden on him. The responsibility is even heavier. "If you have more fans, you will have a greater influence. I also want to use short videos to popularize science to the public, try to let the public understand scientific knowledge, and at the same time, through these experimental videos to inspire physics teachers, in teaching. It certainly helps."

　　Zhu Xiangyang said that he would also actively respond to comments made by netizens.

Speaking of future plans, he said that he would continue to do these experiments, and strive to help more teachers and students, "I also want to use my tiny strength to contribute a little to our physics experiment teaching."