2288: Chinese physics teacher demonstrates “spinning yet not falling” balloon ring in classroom

In an interesting physics class in Wenzhou, Zhejiang on April 20, 2024, the teacher Mr. Tian attracted the attention of all the students with a wonderful experiment.

With a student holding a blower, Mr. Tian threw a ring of colorful balloons to the front, which began to rotate in the air without falling, causing the students downstage to gasp in amazement.

Adding to the classroom scene, Mr. Tien began the challenge of stepping through the middle of this spinning ring of balloons. After an unsuccessful attempt, he managed to pass through the balloon door without letting the balloon fall to the ground, which immediately brought a round of applause from the students.

Mr. Tian in the video said in an interview that the principle of the non-falling balloons is actually quite simple, which is a key concept in fluid dynamics that called the Bernoulli's principle, named after the Swiss physicist Daniel Bernoulli, who published it in his book in 1738. Through this creative experiment, Mr. Tian hopes to combine teaching with pleasure, so as to cultivate a scientific spirit in students from their early age.