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问题:如图1所示,一端封闭的竖直放置的细玻璃管长为L,用长为h的一段水银柱封闭一定质量的理想气体,现在水银柱与管口相平,问能否向管内再加入水银?(设大气压强为p_0) 黄俊生先生在本刊1993年第八期发表的题为《管内汞柱再加入问题的分析》一文中得出结论:如果容器(玻璃管)不是绝热的,水银柱缓慢加入以使气体做等温变化,则能加入的条件是L>p_0+2h。“如果容器是绝热的,则元沦多么长的管子,管口哪怕只有一段水银,都将是一点也加不进去的”本
Problem: As shown in Fig. 1, the length of the vertically placed thin glass tube closed at one end is L, and the ideal gas of a certain quality is sealed with a mercury column of length h. Now the mercury column is flush with the nozzle, and it can be asked if Mercury is added to the tube. (Set the atmospheric pressure to p_0) In the article titled “Analysis of Refilling of Hg Inside the Tube” published by Mr. Huang Junsheng in the eighth issue of the journal in 1993, it was concluded that if the container (glass tube) is not Adiabatic, the mercury column is slowly added to make the gas isothermal change, then the conditions that can be added are L>p_0+2h. “If the container is insulated, then how long a Yuanling pipe, even if it has only a piece of mercury, will not add even more.”