如何在课堂上重现蜃景

How to Reproduce the Mirage in the Class

文章讲述了蜃景的分类及成因,蜃景是物体发出的光经大气折射而形成的虚像,是远处景物在天空或地面形成的光学幻景。为激发学生学习兴趣,应在课堂上成功为学生模拟出"海市蜃楼"现象。对上现蜃景,是用恒定的不同梯度的液体层来模拟成功的;对下现蜃景,是用人造的小沙漠模拟成功的,从而使学生对此现象有了更直观的认识和感受。

This paper describes the classification and causes of looming.Looming is virtual image which is formed the light from the object emitted by atmospheric refraction.Mirage is the optical illusion of distant scenery.In addition,in order to stimulate student＇s interest in learning,this article succeeds in simulating mirage phenomena to students in the class.For the superior mirage,mirage phenomenon is simulated by a liquid layer with the refractive index gradient;for the inferior mirage,mirage phenomenon is simulated by a small artificial desert,so that students have a more intuitive understanding and feelings of this phenomenon.