基于手机录像功能的相变类观察实验改进

Phase Change Experiments’ Observation Based on Smart Phone Picture Recording

建立了一种基于手机录像的简便观察方法,可以用于毛细管法测定熔点、毛细管法测定沸点、氯化铵的结晶等相变类实验的改进。该方法一方面可以明显提高相变类实验的观察效果,便于学生清晰准确地捕捉记录相变过程;另一方面可以反复回放实验过程,便于学生撰写实验报告和教师的检查指导。该方法对提高学生的实验积极性和实验效果具有较大的帮助,并为实验的设计提供了更多的可能性。

In this paper,a simple observation method based on smart phone picture recording was established,which can be used in the measurement of melting point and boiling point,the observation of ammonium chloride’s crystallization and many other phase change experiments.On the one hand,this method can obviously improve the observation effect of the phase change experiments and facilitate students to clearly and accurately capture and record the morphological changes in the phase change process.On the other hand,the recorded experiment process can be replayed time after time,which is convenient for the students’writing of the experiment report and teachers’inspection and guidance.So,this method based on the smart phone picture recording showed great help to improve students’enthusiasm and experimental effect.