Parhelia and lower sun pillar. The diamond dust was made with the mixture of bentonite and water. (link)



[...] This year was the first day of Pentecost on the nones of June; and on the Tuesday following were seen four circles at mid-day about the sun, of a white hue, each described under the other as if they were measured. All that saw it wondered; for they never remembered such before. (The Peterborough Chronicle, 1104 A.D.)
No comments:
Post a Comment