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In the Photos of the Readers of La Vanguardia we can admire the double rainbow crowning the Sant Romà de Sau church this morning, in the Osona region.
Although there is still a lot of rain left to cover this church with water again, the Sau reservoir is now at 24% when it had reached the alarming 1%.
Let’s hope that the rain will continue until Sant Romà is covered again. The Sau reservoir is located in a fabulous landscape. This part of Les Guilleries belongs to the municipality of Vilanova de Sau, county of Osona.
A rainbow is an optical and meteorological phenomenon that consists of the appearance in the sky of one arc (or, in this case, 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.
