The
sky, the earth's atmosphere, the privilege of the single living planet
known. No matter where we are, we all share the same sky.
The
colours in the sky vary from blue to white, pink, green, orange,
violet… Its image is so changeful that you can not see it twice.
The changing colour in the sky is due to the sunlight interaction
with the planet atmosphere.
Sunlight is white, also called polychrome (the addition of all the
colours of the rainbow) and the atmosphere contains a certain amount
of humidity, normally small, as well as dust and ash particles.
The interaction between polychrome sunlight and atmosphere, with its
particles hanging in the air, is enough to bring us a coloured sky.
