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Spectacular sunrise on the beach of Gavà, in the Baix Llobregat, with anticipation to see the departure of the astro king with its curious shape, as we can see in this photograph in Las Fotos de los Lectores de La Vanguardia.
The sun’s rays undergo a bend as they pass through the Earth’s atmosphere. This is an optical phenomenon known as “refraction” and the angle at which light is bent after passing through the Earth’s atmosphere is known as the “angle of refraction.”
Refraction is the change in direction and speed that a wave experiences when passing from one medium to another with a different refractive index.
It is also observed very well with respect to the sun when, for example, the so-called Omega effect occurs.
This spectacular phenomenon is formed when the air, in contact with the surface, very dense and at the same time warmer, produces the refraction of light, which deforms the sun and creates the mirror effect, which then takes the shape of an Etruscan vase, like said the writer Jules Verne.
