How do Rainbows Form?

Rainbows are one of the joys of seeing the rain. Although we all love seeing the rainbow, we don't know how they are formed, or where the seven colors come from. The seven colors displayed in the rainbow, are the seven colors of the spectrum. Now that we know the seven colors, how are rainbows truly formed? When the rain is still fresh in the air and sky, the water droplets refract to form the colors of the spectrum. The water droplets break the seven colors down, so we can visually see the colors. In the sky, the rainbow only takes a portion of the sky, and that is because, on the electromagnetic spectrum chart, only the colors of the spectrum take a tiny portion of the chart itself.
    The colors seem to blend into one another, and that is because of the colors, and how they are ordered. So, technically, the rainbow is formed due to the internal reflection, and refraction coming from the light source. Reflecting, means it is simply coming back to your eyes, and refracting is the change in direction of the light. When the light is being refracted, thats how the rainbos contains it's arch shape.