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Παρασκευή 13 Σεπτεμβρίου 2024

Astronomy Picture Of The Day: A Lunar Corona over Paris

 

#corona, #quantum_mechanical, #Paris, #bluebeacon, #EiffelTower #Space ,#astronomy  
 

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 eyeSolar coronae are also sometimes evident. The featured image was taken last month from ParisFrance. The blue beacon emanating from the Eiffel Tower did not affect the colorful lunar corona.

https://apod.nasa.gov/apod/ap240530.html

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