A '''rainbow''' is a semi-circular color spectrum appearing in the sky due to the result of [[refraction]] and multiple [[reflection]]s of [[sunlight]] in droplets of [[water]]. Rainbows appear when water droplets are lit by direct sunlight, a condition that rarely occurs ''during'' a [[storm]], because the [[cloud]]s block the [[sun]]. Rainbows are frequently seen ''after'' a storm, when the falling rain has moved into the distance and the sun is roughly behind the observer when the observer is facing the patch of rain. | A '''rainbow''' is a semi-circular color spectrum appearing in the sky due to the result of [[refraction]] and multiple [[reflection]]s of [[sunlight]] in droplets of [[water]]. Rainbows appear when water droplets are lit by direct sunlight, a condition that rarely occurs ''during'' a [[storm]], because the [[cloud]]s block the [[sun]]. Rainbows are frequently seen ''after'' a storm, when the falling rain has moved into the distance and the sun is roughly behind the observer when the observer is facing the patch of rain. |