BestViewedOnBlack - bvob
WIKI FACT: Fern frost forms when a glass pane is exposed to very cold air on the outside and moderately moist air on the inside. The glass surface influences the shape of the crystals, so imperfections, scratches, dust and bird poo modify the way the ice forms.

WIKI FACT: Fern frost forms when a glass pane is exposed to very cold air on the outside and moderately moist air on the inside. The glass surface influences the shape of the crystals, so imperfections, scratches, dust and bird poo modify the way the ice forms.

glassFern FrostWindscreenWinterIceCrystalsFormationFrost