Dear Roger, Your Mount Baker pictures are indeed a feast for the eye.
Did Barry Barry Duell explain the physics in his talk on the Fuji Diamond? The sun appears "to take a bite out of" Mount Baker and my inference is that this is an example of Knife-Edge Diffraction as explained by Huygens and Fresnel. I should be interested to hear whether this is right. Should one expect a slight change in colour between the sun ABOVE the bite and IN the bite? Very best wishes Frank Frank King Cambridge, U.K. --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
