How can you describe rainbow?

A rainbow is a meteorological phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets, creating a spectrum of light in the sky. It typically appears as a multicolored arc, with red on the outer edge and violet on the inner edge. Rainbows are often seen after rain when the sun is shining, and they evoke a sense of wonder and beauty in nature. Their vibrant colors are a result of the different wavelengths of light being separated.