Goldfish resurrected, flowers broken powder?Professor Wang Ruzhu brought "handed in small seedlings" to open the new world of "warm and warm"

How is the temperature divided? What is cooling? What are the applications of refrigeration?

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In the third lecture "The" Cold and Cold Story "in" Mr. Da "and" Seeing Miao ", Professor Wang Ruzhu used in -depth explanations, on -site demonstrations such as goldfish frozen, and interesting experiments such as resurrection, rose low temperature and other interesting experiments. "Sub -seedlings" open the new world of "warm and warm".

On the afternoon of July 27, the third phase of the "Mr. Big" and "Miao Miao Miao" series of special lectures hosted by the 2022 online summer growth camp hosted by Shanghai Jiaotong University Trade Union was a wonderful lecture. Wang Ruzhu, a professor of lecturer at Shanghai Jiaotong University, a national advanced worker, director of the Institute of Refrigeration and Low -temperature Engineering of Shanghai Jiaotong University, chief science experts of the China Refrigeration Society, and Deputy Director of the Popular Science Working Committee. He used the most common examples around us and a deep description to lead the semi -seedlings into the magical "warm and warm world". This lecture is also live broadcast online, more than 1,300 people watch live broadcast.

In the opening speech, the chairman of the school union Yu Chaoyang expressed his gratitude to Professor Wang Ruzhu, and welcomed the parents and the "Miao Miao" who participated in the lectures online and offline. He mentioned that Professor Wang Ruzhu is an advanced worker in the country. He has made outstanding dedication in the key areas of sustainable development of human society such as energy conservation and emission reduction. Looking forward to this lecture, it brings different "cold and warm knowledge" to the "handling seedlings", which stimulate children's interest in exploring the magical scientific world.

At the beginning of the lecture, Teacher Wang Ruzhu started from the recent high temperature weather and air conditioning, introduced the concept of temperature, and told the close connection and important use of the "cold and cold story" with our daily life.

What is temperature, how to measure temperature, what is the unit of temperature, what are the applications of refrigeration technology in national defense military workers and high -tech, and what is the research content of the Nobel Prize scientists in refrigeration. Teacher Wang Ruzhu stepped down step by step to introduce the scientific knowledge about "warm and warm" in detail. He also introduced interesting low -temperature phenomena such as zero resistance, low temperature superconducting.

The "Miao Xiaomiao" listened at all times, and actively raised his hands to respond to questions from time to time. The clouds gather, wonderful. Watching the live broadcast of the live broadcast online also listened carefully in front of the screen and took notes.

In this lecture, the two interesting experiments brought by Teacher Wang Ruzhu and assistants even caused the scene to marvel at the scene. In the first experiment, Mr. Wang quickly soaked the entire goldfish in the liquid nitrogen at -196 ° C, and the goldfish was "frozen to death". When the goldfish was removed from the liquid nitrogen and put it in the water, the goldfish was quickly resurrected. In the second experiment, the roses after the liquid nitrogen were frozen and the roses were crushed with their hands gently with their hands, showing the process of low temperature crushing to the "See Miao". These two experiments deeply infected the "See Miao", allowing them to intuitively feel the charm of science. Many "Miao Miao" personally participated in the experiment under the guidance of the teachers, and had a deeper understanding of low temperature knowledge.

During the interactive session of the on -site question, the "handed over the seedlings" were eager to try and raised their questions. "Can humans be frozen and resurrected?" "Can the cooling and low temperature technology be separated from the oxygen and nitrogen in the air? Can it be separated from carbon dioxide and water vapor?" Professor Wang Ruzhu responded one by one and answered carefully.

In the end, "Dating Xiao Miao" thanked Mr. Wang Ruzhu's dedication, and took a photo with Teacher Wang.

Source: school union

Editor on duty: Yang Xueting

Editor in charge: Qi Jie

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