3.8 Concentrating on the system Entropy is the basic concept for discussing the direction of natural changes. Nevertheless, in order to use it we have to investigate both the system and its surroundings. We have seen that it is always ver simple to calculate the entropy change in the surroundings and now we shall show that it is possible to devise a method of taking the surroundings into account automaticall 4上一内容下一内容◇回主目录 返回 2021/2/22上一内容 下一内容 回主目录 返回 2021/2/22 3.8 Concentrating on the system Entropy is the basic concept for discussing the direction of natural changes. Nevertheless, in order to use it we have to investigate both the system and its surroundings. We have seen that it is always very simple to calculate the entropy change in the surroundings, and now we shall show that it is possible to devise a method of taking the surroundings into account automatically