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海市蜃楼发生时能够返回地面之光线的初始角探讨

  • 于凤军
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  • 安阳师范学院物理与电气工程学院,河南安阳455000
于凤军( 1959—) ,男,河南安阳人,安阳师范学院物理与电气工程学院教授,主要从事理论物理、天体

收稿日期: 2016-02-16

  修回日期: 2016-12-15

  网络出版日期: 2017-07-20

College of Physics and Electrical Engineering,Anyang Normal University,Anyang,Henan 455000,China

  • YU Feng-jun
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Received date: 2016-02-16

  Revised date: 2016-12-15

  Online published: 2017-07-20

摘要

从真空中光速最大事实和折射定律( 或光线轨迹方程) 出发,证明: 大气中能够返回地面之光线的初始角α 是不能任意的,且当α 大于某个值αm 时,从某点发出的光线不可能返回地面,同时给出影响αm的其他因素.

本文引用格式

于凤军 . 海市蜃楼发生时能够返回地面之光线的初始角探讨[J]. 大学物理, 2017 , 36(7) : 12 -13 . DOI: 10.16854 /j.cnki.1000-0712.2017.07.004

Abstract

Starting from the fact that the speed of light in a vacuum is the largest and the law of refraction ( or ray trace equation) ,it is proved that the initial angle α of the light ray being able to return to the ground in mirage can not be arbitrary. When α is greater than the certain value αm,the light emitted from a point is not able to return to the ground. The other factors affecting αm are also given.
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