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I captured this photograph for La Vanguardia’s Readers’ Photos last weekend in Cuerres (Asturias). We see the rainbow repeating at the bottom.
The rainbow is always spectacular and, if we see it twice, even more so. On this occasion, we see it repeated at the bottom of this image.
Cuerres, in the municipality of Ribadesella, is located at an altitude between 50 and 80 meters above sea level. It is between the sea and the mountains, at the foot of the Sierra de Escapa, under the Alto de Teyadura (743 m) and the El Portiellín hill. The Aguadamía River runs through the town and flows into the beach.
A rainbow is an optical and meteorological phenomenon that consists of the appearance in the sky of an arc (or two) of multicolored light. It is caused by the decomposition of sunlight into the visible spectrum, which occurs by refraction, when the sun’s rays pass through small droplets of water contained in the Earth’s atmosphere.
Although the rainbow is a continuous gradient of spectral colors, it is considered that these can be defined in seven fundamental colors: red, orange, yellow, green, cyan, blue and violet, which are equivalent to those mentioned by the scientist Isaac Newton in 1704. .
Less common is the double rainbow, which includes a second, fainter arc with the colors inverted, that is, red towards the inside and violet towards the outside.
