February 2, 2020
If one day you are walking and you realize that your shadow has a halo, do not panic, it has an explanation. One of my photos selected and explained today in OPOD Optics Picture Of the Day. https://www.atoptics.co.uk/fza199.htm Very grateful to Les Cowley for his fantastic work in illustrating and explaining all these atmospheric phenomena.
June 1, 2015
Today in Optics Picture of the Day my Baltic Halos