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minusmanhattan:

minusmanhattan:

Caught this rainbow’d airplane shadow on the flight home yesterday. 

Thanks to Robotcosmonaut I found out that this optical phenomenon is called a “glory.” From Wikipedia:

A glory is an optical phenomenon that resembles an iconic saint’s halo about the shadow of the observer’s head. The effect is believed to happen due to classical wave tunneling, when light nearby the droplet tunnels through air inside the droplet and, in the case of Glory, is emitted backwards due to resonance effects.