A rainbow spans a continuous spectrum of colors; the distinct bands including the number of bands, are an artifact of human color vision, and no banding of any type is seen in a black-and-white photo of a rainbow, only a smooth gradation of intensity to a maximum, then fading to a minimum at the other side of the arc. For colors seen by a normal human eye, the most commonly cited and remembered sequence, in English, is Newton’s sevenfold red, orange, yellow, green, blue, indigo and violet . However, color-blind persons will see fewer colors.Rainbows can be caused by many forms of airborne water. These include not only rain, but also mist, spray, and airborne dew. You can see 20 beautiful rainbow images below. Do not forget to tell me through your comment, which one you like most.

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