Nevache, French Alps
Rainbows in the French Alps Imaged near Nevache by Alain Origne (Canigou atmospheric optics) on March 17, '07. The intensity ratio of the primary and secondary bows is well shown. The secondary bow is fainter because it requires two reflections inside raindrops and because it is almost twice as wide as the primary. Why is the sky brighter inside the primary? Image ©Alain Origne, shown with permission.