Re: APOD asks "What caused this ring of colors?"

Post #174,153 by Steven A S 9/14/04 9:37:50 AM Reply	Re: APOD asks "What caused this ring of colors?" The light and source of the rainbow are obviously behind him - hence the shadow. The shadow is sharp, so I would imagine the light source is small or going through a small hole. My guess is the pinhole is causing the refraction, and of course red light being lower frequency would be bent more and be on the outer ring. ~~~)-Steven---- "I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country..." General George S. Patton
Post #174,159 by deSitter 9/14/04 10:00:12 AM Reply	Shadow is from the Sun Hint: you can estimate the angular size of the ring and match it up with known atmospheric phenomena. -drl
Post #174,160 by Steven A S 9/14/04 10:04:44 AM Reply	Re: Shadow is from the Sun Yes, that is what I believe myself, but the shadow is too sharp for it to be from the full sun. If the sun were shining directly behind him in open air, there would be some feathering on the edge of his shadow. That's part of why I believe it's shining through a pinhole. ~~~)-Steven---- "I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country..." General George S. Patton

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