A rainbow is a natural meteorological phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets, resulting in a spectrum of light appearing in the sky. Typically, a rainbow forms when it rains and the sun shines simultaneously, creating a circular arc of colors. The primary colors of a rainbow are red, orange, yellow, green, blue, indigo, and violet, often remembered by the acronym ROYGBIV. Rainbows can be seen in various locations, including near waterfalls, fountains, or after a rain shower. They are often associated with beauty and hope in many cultures. In addition to their aesthetic appeal, rainbows have been studied scientifically, contributing to our understanding of light and optics.