浅析理想气体的四种膨胀过程房文远（陕西省永寿县中学，７１３４００）在解答有关理想气体性质的许多物理习题时，常见到对理想气体膨胀过程的四种描述，即等温膨胀、等压膨胀、绝热膨胀和自由膨胀．理想气体在这四种膨胀过程中所表现出的特征、所遵循的规律及其功能转化... A brief analysis of the four expansion processes of ideal gases Fang Wenyuan (Yongshou County Middle School, Shaanxi Province, Shaanxi Province, 711400) When answering many physical problems related to the properties of ideal gases, four descriptions of the ideal gas expansion process are common, ie, isothermal expansion, etc. Pressure expansion, adiabatic expansion and free expansion. The characteristics, rules and functional transformation of the ideal gas in these four expansion processes...