The Sorting by Sea Currents
Sea currents sort objects according to size, shape and weight. There is a documented case of left Wellington boots from a lost container washing up…
Tag: Alan Gibson
22 Degree Halo and Contrail Shadow
My thanks to Alan Gibson, urbane forager and regular contributor to this blog, for another great image. In this picture we are looking at two…
Heiligenschein or Halo Effect
Here is a lovely example of Heiligenschein, or ‘halo effect’. When a bright light source is directly behind us, we see a brighter ring around…
More Beautiful Sun Dogs
My thanks again to Alan Gibson for sending over some great images. These are sun dogs or parhelia and parts of a “22 degree halo”.…
Contrail Shadows
My thanks to Alan Gibson, author of the Urbane Forager blog and book, for sending me these great images of a contrail shadow. (Contrails are…