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This Friday at noon, at exactly 1:35 p.m., this solar halo could be seen in the sky of Vic (Osona), a moment portrayed for Las Fotos de los Lectores de La Vanguardia.
The solar halo forms around the sun presenting an iridescent ring on its outer circumference, due to ice crystals when there are high clouds.
The halo is caused by ice particles suspended in the troposphere that refract light, generating a spectrum of colors around the moon or sun.
It is an optical effect in the shape of a disk around the sun —or the moon— and that presents an iridescent ring on its outer circumference.
The iridescences in the clouds look like oil stains. It is an optical phenomenon referring to the property of certain surfaces in which the tone of light varies according to the angle from which the surface is observed.
