巴黎上空的月华

巴黎上空的月华

A Lunar Corona over Paris
Image Credit & Copyright: Valter Binotto

Explanation: Why does a cloudy moon sometimes appear colorful? The effect, called a lunar corona, is created by the quantum mechanical diffraction of light around individual, similarly-sized water droplets in an intervening but mostly-transparent cloud. Since light of different colors has different wavelengths, each color diffracts differently. Lunar coronae are one of the few quantum mechanical color effects that can be easily seen with the unaided eye. Solar coronae are also sometimes evident. The featured image was taken last month from Paris, France. The blue beacon emanating from the Eiffel Tower did not affect the colorful lunar corona.

Portal Universe: Random APOD Generator

Tomorrow’s picture: nebulous realm

巴黎上空的月华
影像提供与版权: Valter Binotto

说明: 为何云雾中的月亮有时候看起色彩缤纷呢？这种称为月华的现象，是由于居中接近透明的云之大小均一小水滴，所产生的量子力学绕射效应。由于不同的色光具有不同的波长，导至每种色光绕射的角度也不同。月华是少数几种肉眼 轻易可见的量子力学色彩效果之一。另外，日华也是偶而可见的现象。这幅主题影像是在上个月摄于法国的巴黎。影像中从艾菲尔铁塔发出的蓝色警示信标，并未对多彩的月华造成影响。

宇宙传送门: 随机APOD生成器

明日的图片: nebulous realm