It rained in the Greater Las Vegas Area, which posed a threat of flash floods in specific areas of the valley. However, the Sun was visible to the West; and just before sunset, this magnificent rainbow, at least I thought it was magnificent, appeared. At first, I saw the big bright bands of color that stretched across the sky — “wow, look at that rainbow”, I thought; but to my surprise, I noticed a second rainbow above it.
I quickly captured the photographic image with the built-in camera from my mobile communications device. I did some minor post-processing of the image using Adobe Photoshop — I only leveled the horizontal, enlarged, and cropped the image. Capturing this image of the double rainbow made my day.
“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 multicolored arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.
Rainbows can be full circles; however, the average observer 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 on the inner side. This rainbow is caused by light being refracted when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
In a double rainbow, a second arc is seen outside the primary arc, and has the order of its colors reversed, with red on the inner side of the arc.” [edited] Source: Wikipedia.org