Rainbow Rainbow A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. Rainbows can be full circles. However, the observer normally sees only an arc formed by illuminated droplets above the ground, and centered on a line from the sun to the observer's eye. In a primary rainbow, the arc shows red on the outer part and violet
Rainbow (group) was released. On August 12, 2010, Rainbow released the single "A". A second single, "Mach", was released on October 20. In April 2011, Rainbow released their second EP, "So Girls". One song from the EP, "To Me", was released as a single. On September 7, 2011, Rainbow topped Recochoku's weekly download rankings for the Japanese release of their "A" music video. On September 14, 2011, Rainbow released their debut single in the Japanese market, "A", and reached No. 3 on Oricon's daily single chart, selling 10,141 copies. The single release included a Japanese remake of their debut single "Gossip Girl",