* The author is part of the community of readers of La Vanguardia
Today, in La Vanguardia Readers’ Photos, we are located in Sant Celoni, in the Vallès Oriental, where we can see these images of the cloud-piercing rainbow.
On a morning where the combination of some drops and a little sun caused the appearance of the rainbow, which was seen up to two different times.
A very entertaining, colorful and meteorologically eventful morning, which allowed us to contemplate this phenomenon in the sky combined with the clouds.
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. .
