测定大气压的托里拆利实验十分重要,而学生对实验的操作规范及观察到的现象、结论,容易形成定势。在对实际情况进行具体分析时,常会因定势障碍产生失误。今举三例分析之。 [例1]利用托里拆利实验测定大气压,图1中只有一种是正确的。则大气压值为 [失误剖析]由于学生熟记标准大气压值,形成了 The Torredetti test for measuring atmospheric pressure is very important, and the students’ operating norms, observed phenomena, and conclusions are easy to form. In the concrete analysis of the actual situation, mistakes often occur due to obstacles in the fixed position. Here are three examples of analysis. [Example 1] The atmospheric pressure was measured using the Torricelli experiment. Only one of the images in Fig. 1 was correct. The atmospheric pressure value is [Failure Analysis] because the student memorizes the standard atmospheric pressure value.