Forested mountainside with bare high ground in the background. The double rainbow goes edge to edge across the photo, in front of the mountain. You can actually see all seven colors – red, orange, yellow, green, blue, indigo and violet (the last three bands are very narrow and kind of smushed together, but there's definitely violet at the lower edge).
Below the violet band in the photo is a band of colorless or white light – it is in the ultraviolet area of the spectrum, which is invisible to human eyes but can be seen by some cameras, and thus captured in a photo. Apparently the tiny water droplets in the atmosphere scatter the light so it appears white.
My friend in Volcán, Panama, sent this fantastic #photo of a #DoubleRainbow in front of a mountain!
Unlike the washed-out looking rainbows I see here in the mid-Atlantic area, this tropical beauty has all 7 colors *plus* a colorless band in the ultraviolet! (More about that in alt text)
#rainbow