The 2023 National Science Day campaign took place across the country from September 17 to 23. In the Jiangsu Nanjing Science and Technology Museum, various scientific installations and colorful popular science experience activities made many students who came to visit shout magic.
Coming to Nanjing Science and Technology Museum, the first thing that attracts everyone is its unique appearance, which looks like an oval flying saucer from a distance, and looks like a submarine up close. There are permanent exhibitions and constantly updated theme exhibitions, and 70% of them are content that you can interact with and participate in, and you can feel the charm of science up close.
Many exhibitions in the science and technology museum seem ordinary, but in fact, there are a lot of things behind it, a device that looks like a swing is called a coupling pendulum, this swing and a 100-pound pendulum are actually connected to the same axis, when we swing, such a heavy pendulum will also swing.
Xu Yan, docent of Nanjing Science and Technology Museum: After the gravitational potential energy in front of us is converted into kinetic energy, the energy generated is transmitted to this pendulum through the middle axis.
Student Yao Ruyang: This coupling pendulum uses the kinetic energy conversion method in our physics textbook. In textbook school, we students often feel bored, but after coming to our science and technology museum to experience it firsthand, we will find that it actually feels very different.
Information technology has profoundly changed our lives, and this year the Nanjing Science and Technology Museum also added an information and energy exhibition area. A device called flipping, when the human body stands in front, what kind of posture can be posed, what kind of pose can this image also make. The principle is very simple, there is a small probe in front of the human body, which can convert the optical signal on my body into electrical and magnetic signals. Each small disc on this wall is more like a pixel, controlled by magnetism, it has black and white sides, and it is flipped by magnetism to form a different pattern. This is the simplest display technology, when there is no one in front, it will also be in an automatic sleep state, saving energy.
Xu Yan, docent of Nanjing Science and Technology Museum: What do you think is the most application? Motion capture. For example, if you see a virtual reality dressing mirror over there, is it related to these, right? These are also real-life applications between our flips.
Student Kong Wenxi: I can see a lot in reality, but I haven't gone to the deep understanding of how it works, and now I know that it is really amazing.
In the electronic age, the power of electricity is endless, high-voltage electricity can transmit energy, and in the Nanjing Science and Technology Museum, such a device can also make high-voltage singing.
The experience of "singing" and making students' hair stand on end, attracted a burst of amazement and rewarding experience among the children.
Student Hang Xinyi: You don't feel electricity in your body, but your hair will all stand up when you are not paying attention, which is quite shocking.
In addition, the Nanjing Science and Technology Museum has also carefully prepared a small class for popular science experiments, which has attracted many children.
A hair dryer can steadily blow ping-pong balls and balloons without running around, wooden sticks can be inserted into a plastic bucket full of rice to lift heavy rice, the bristles of two toothbrushes are crossed together, and friction can carry a basket of eggs... A variety of fun experiments and interactions to impress the children.
Child Lei Muxing: I feel that the big bucket is very heavy and can't be lifted, but I didn't expect to mention it, I think the experiment of the rice bucket is very interesting, and I want to come back in the future.
Kindergarten teacher Fang Qingshuang: Put some profound scientific principles, use some common materials, familiar situations in life to perform, and interpret them, children can feel this magical process. So you see, this kind of engagement from kids is very high. I think this activity is to plant a seed of science in the hearts of children and stimulate their curiosity.
It is understood that Nanjing has established the "Nanjing Modern Science Popularization Venue Alliance" to regularly carry out fun and interesting science education activities. At present, the number of member units of the alliance has reached 65, initially forming a high-quality science popularization infrastructure system covering all districts of Nanjing, and has received more than 8.5 million tourists this year.