商业 来源:安徽日报 时间:2023-07-06 06:01:02
(资料图)
7月4日傍晚,合肥天际线出现的金色绯红晚霞,扮靓了天空。晚霞为何在夏季频现呢?晚霞是由太阳光散射产生的。太阳可见光由七色混合而成,其中紫色、蓝色光波最短,红色、橙色光波最长。阳光穿透大气层时,各色光线被分散,光波短的更容易被散射开来,光波长的则更容易保留。傍晚,阳光斜射,散射效果更加明显。地面温度升高、水汽上升,更容易在天空形成变幻多样的云,所以在气温高、水汽足的夏季里更容易产生绚丽的晚霞。
本报记者 温 沁 摄
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