What are the spokes that can sometimes be seen in the rainbow?
These are solar rays, seen from behind (solar rays are usually seen diverging from the sun). Since these rays are opposite the sun (where the rainbow is), they are called antisolar or anticrepuscular rays. The region inside the rainbow is a region of high scattering of light, so these anticrepuscular rays are not uncommon to see in rainbows. • I saw two rainbows crossing eachother?? You may have seen the rare reflection rainbow. This rainbow is a horizon-mirror image of the main rainbow and is produced when the sun reflects in a very flat water surface. The reflection makes two light sources, the sun and its mirror image below the horizon, and a rainbow is produced by each source.
