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空气是大自然赋予地球最重要的物质之一,它充盈着整个地球周围,是人类及各类动植物赖以生存的基本生命物质,与人们生活息息相关。因此,物理学界从未停止过对空气的研究和探索。然而,笔者在这里只就其在物理学的基础地位给予肯定和展示。对于初涉物理学的初中生来说,教材体系只能按不同物理现象分类编排。而无法针对某一物质研究其所有物理属性。这样就似乎掩盖了本来非常庞大并且具有多元物理属性的空气的基础地位。在现行的初中物理教材所编排的体系中,空气算得上是主角,几乎贯穿了整个教材。在声现象中,声音传播的主是介质就是空气,光学里的直线传
Air is one of the most important materials endowed by nature to the earth. It fills the entire earth, and is the basic life material for humans and all kinds of animals and plants to survive. It is closely related to people’s lives. Therefore, the physics community has never stopped researching and exploring the air. However, the author here only gives its affirmation and demonstration of its fundamental position in physics. For the junior high school students who are involved in physics, the textbook system can only be arranged according to different physical phenomena. It is impossible to study all physical properties of a substance. This seems to mask the fundamental position of the air, which is already very large and has multiple physical attributes. In the current arrangement of the junior middle school physics textbooks, the air is the main character and it runs through the entire textbook. In the phenomenon of sound, the main source of sound transmission is the air, the straight line in optics.