Rainbow

I think one months ago, I saw a beautiful rainbow actually a double rainbow ( a reflected rainbow) in Calgary. It was so beautiful. I like rainbow; it is so colorful and remember happy things and a hatch to unknow world. The rainbow's appearance is caused by spreading of sunlight as it is refracted by raindrops. In my language, rainbow is called a bow of colours (Ranginkaman). Although, The traditional description of the rainbow is that it is made up of seven colors - red, orange, yellow, green, blue, and violet, the rainbow is a whole continuum of colors from red to violet and even beyond the colors that the eye can see. On the other hand, in different cultures there are differen stories about rainbow. For example, in Greek mythology, the rainbow was considered to be a path made by a messenger (Iris) between Earth and Heaven and in Irish mythology, the end of rainbow is the place that leprechaun usually hide his treasure.