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  • Scientific Experiments Show


          (1) Liquid Nitrogen and Superconductor

    Nitrogen is a common element in our lives and it is present in the air. Through the way of temperature reduction and pressurization, the nitrogen can be liquefied into liquid nitrogen by Scientists. Liquid nitrogen is inert, colorless, no odor, non-corrosive, nonflammable, and keep a very low temperature. Under ordinary conditions of pressure, liquid nitrogen temperature is to - 196 ℃; 1 cubic meters of liquid nitrogen can expand to 696 cubic meters of 21 ° C pure gaseous nitrogen. Vaporization of liquid nitrogen brings heat absorption, and a lot of exposure will cause frostbite. The ultra-low temperature of liquid nitrogen creates a favorable environment of low temperature for academician Zhao Zhong-xian’s research in China. He developed the copper and iron based on high temperature superconductivity and etc, which makes an outstanding contribution for our country in superconducting research. This activity is mainly to introduce the nature of the liquid nitrogen to the audience, especially its ultra-low temperature, easy vaporization in the nature of the environment, and the effects of the superconducting in ultra-low temperature conditions. Let the audience understand the features and functions of different substances and broaden the audience's mind.

    (2) The Enlightenment of Eggshell

    This activity is a large scientific performance. By using the eggs to mainly introduce the characteristics of the arch structure.By the experiment of Stepping on the light bulb, Arch bridge experiments reveal the mechanics characteristics of arch structure, which leads to the ancient Chinese bridge - Zhaozhou arch bridge structure, showing the wisdom of the Chinese nation and superb construction building level.

    (3)The Effect of Electrostatic

    Using electrostatic generator, we design a series of static characteristics experiment. Through close observation and experience, the activity focuses on the characteristics of the direct experience in science and technology museum education. Experiment content includes arc discharge, electrostatic octopus, electrostatic windmills, static ball, and electrostatic dust and all covers the characteristics of the electrostatic and electrostatic application of knowledge in many aspects. Experiments demonstration helps participants understand how to prevent lightning in our daily life, how to make use of electrostatic, how to avoid the harm of static electricity, and finally to realize the impact of science in life.

    (4) Rocket Science   

    This activity of science show chooses the rocket as the theme. Using Newton's third law (force and reacting force) as the clue of knowledge, this experiment sets up different types of content such as the balloon rockets, compressed gas rocket dust, alcohol rocket, dust rocket, etc. the process changes from small to large, slow to fast, weak to strong, with the experience guiding the youth to explore the principle of rocket step by step, understanding the role of compressed gas and the role of the engine tail nozzle plane.

    Resource Unit:China Science and Technology Museum

    Sharing Mode:Negotiation

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