Despite having a frosty morning today I still decided to go for a run in the morning rather than the afternoon. I mention the frost because I noticed that one velux had the usual frost fractals but the others were clear. This is curious.
Frost fractals on a velux
I wore a thermal layer, a fleece, a t-shirt and some running shoes that were not waterproof. I would have run one route but a couple took the entire width of the road so I ran along the side of the road, and in the grass by the side of the road.
When the conditions are just right fractals form on veluxes and they are beautiful. It requires the air to be cool enough for ice to form, but as thin layers, rather than thick. If the wind is just right then you end up with patterns such as the one below.
Fractal frost on a Velux
This morning all of the windows had a nice pattern so I photographed them twice. The first time when they were lit by indirect sunlight and the second time when they were.
Yesterday we had rain and with that rain came a night cold enough for everything to be covered in ice. As I came out of the train station in Nyon I could feel my feet slip frequently. In the process walking was treacherous for those who are not experienced with the pleasure of walking on ice. For others it is an opportunity to look for possible pictures.
On a minivan I saw this pattern on the windowscreen.