Rainbow

Hi friends, I know that it will be a nice one to see a rainbow on the sky during rainy seasons… But any one had ever thought about how it is formed… If not, don’t worry. Reveal of the unknown is there for you to reveal you these information’s.
Rainbows are optical illusions and meteorological phenomena that cause a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicolored arc, with red on the outer part of the arch and violet on the inner section of the arch. More rarely, a secondary rainbow is seen, which is a second, fainter arc outside the primary arc, with colors in the opposite order, that is, with violet on the outside and red on the inside.
Rainbows can be caused by other forms of water than rain, including mist, spray, dew, fog, and ice. Moreover, rainbows can have shapes other than a bow (arc), including stripes, circles, or even flames.
Rainbows can be observed whenever there are water drops in the air and sunlight shining from behind a person at a low altitude angle (on the ground). The most spectacular rainbow displays happen when half of the sky is still dark with draining clouds and the observer is at a spot with clear sky in the direction of the Sun. The result is a luminous rainbow that contrasts with the darkened background.
The rainbow effect is also commonly seen near waterfalls or fountains. Rainbow fringes can sometimes be seen at the edges of backlit clouds and as vertical bands in distant rain. The effect can also be artificially created by dispersing water droplets into the air during a sunny day. Rarely, a moon bow, lunar rainbow or night-time rainbow, can be seen on strongly moonlit nights. As human visual perception for color is poor in low light, moon bows are often perceived to be white.
Thus I believe that, this information will be helpful for you know about the formation of rainbows. Thanks for reading this post and have a nice day…