摘要
彩虹是一种常见的大气光学现象,在一定天气条件下,在彩虹的附近还会出现附加的弧形彩色条纹,这就是复虹。目前关于复虹的实验研究还十分有限。本文从集体散射与单体散射两方面对复虹现象进行了实验研究。通过水雾光散射再现了复虹现象,并测量统计了水滴尺寸及其分布对复虹的影响。然后通过单水滴光散射实验,研究了不同照明波长、不同水滴尺寸下的复虹现象,从微观上解释了复虹的形成机理。我们还利用散射理论计算研究了水滴尺寸及其统计分布对复虹效果的影响,计算结果进一步证实了实验结论的正确性。
Rainbow is a common atmosphere optical phenomenon.In certain weather conditions,additional color arcs may appear near the main rainbow,which are called supernumerary rainbows.So far,there are few reports on the experimental research of the supernumerary rainbows.In this paper,we study the supernumerary rainbows from two aspects of both the collective scattering and individual scattering.The supernumerary rainbows phenomenon was reproduced by water mist light scattering,and the influence of the size and distribution of the water drops on the supernumerary is discussed.Then,through the light scattering experiment of single water drop,the phenomenon of supernumerary rainbows under different illumination wavelengths and different water droplet sizes is studied,and the formation mechanism of the supernumerary rainbows is explained from the micro level.We also use the Mie scattering theory to calculate and study the influence of the droplet size and its statistical distribution on the supernumerary rainbows phenomenon,and the calculation results further are consistent with the experiment ones.
作者
彭子云
漆元臻
李泽宇
梁颖
向红
韩德专
PENG Ziyun;QI Yuanzhen;LI Zeyu;LIANG Ying;XIANG Hong;HAN Dezhuan(National Demonstration Center for Experimental Physics Education(Chongqing University),Chongqing 401331)
出处
《物理与工程》
2023年第1期101-106,共6页
Physics and Engineering
关键词
复虹
水滴尺寸分布
色散
米氏散射
supernumerary rainbows
droplet size distribution
dispersion
Mie Scattering
