2011年1月8日中午.吉林省长春市上空出现了“三个太阳”(如图1所示).这种奇特景象一直持续到下午2点15分.这是怎么回事呢?这种现象在气象学上称为“假日现象”.由于长春地区持续下了好几天的雪,天空中飘浮着许多六角形柱状冰晶,当太阳光照射到这些冰柱上时发生折射,形成一些光环、光弧和光点,人们视觉上以为天上出现了“三个太阳”.光的折射规律光从一种介质斜射入另一种介质时,传播方向一般会发生变化,这种现象叫光的折射现象. At noon January 8, 2011, there appeared “Three Suns” above Changchun City, Jilin Province (as shown in Figure 1). This strange phenomenon lasted until 2:15 pm What happened? This phenomenon is called meteorological “holiday phenomenon.” Since the Changchun area lasted several days of snow, there were many hexagonal columnar ice crystals floating in the sky, refracted when the sunlight shone on these icicles , The formation of aura, light arc and light spot, people visually think that there are “three sun ” light refraction law light from one medium oblique into another medium, the propagation direction will generally change, which Kind of phenomena called the refraction of light phenomenon.