Zero Order Glow & Rainbows ~ Seen by D�vid H�rincs at Egyh�zasr�d�c, Hungary ©D�vid H�rincs

When there is a rainbow and rain is also falling around you, look sunwards.   Often the sky there is suffused with light, golden or red when the sun is low.   This is the 'zero order glow'.

Light passing through raindrops without being internally reflected forms the glow. But why a glow rather than a rainbow?


About - Submit Optics Picture of the Day Galleries Previous Next Today Subscribe to Features on RSS Feed