A Complete Collection of 100000 Whys
Fav十万个为什么
月全食的时月亮为什么是暗红色的?
月全食时月亮呈现暗红色,主要是因为阳光穿过地球大气层发生折射和散射、不同波长光的散射程度不同以及红光穿透大气层后照亮月球表面,具体如下:
1、阳光穿过地球大气层发生折射和散射:当太阳、地球、月球几乎在同一直线上时,地球挡住了太阳光,但阳光会穿过地球大气层。阳光进入地球大气层时,会发生折射和散射。
2、不同波长光的散射程度不同:阳光是由多种颜色的光组成的,不同颜色的光波长不同。波长较短的光(如蓝光和紫光)比波长较长的光(如红光)更容易被地球大气层中的气体分子散射掉。
3、红光穿透大气层后照亮月球表面:在阳光穿过地球大气层的过程中,大部分蓝光和紫光被散射掉,而红光由于波长较长,受散射的影响较小,可以穿透大气层照射到月球表面。这些红光被月球表面反射回地球,使得我们在月全食时看到的月亮呈现暗红色。
总结:月全食时月亮呈现暗红色,主要是因为阳光穿过地球大气层发生折射和散射、不同波长光的散射程度不同以及红光穿透大气层后照亮月球表面。
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