April 14, 2013
Photographer: Patricia O. Polo; Patricia's Web site
Summary Author: Patricia O. Polo; Jim Foster
The photo above showing feathery frost crystals was snapped at my home in Lethbridge, Alberta, Canada, just after a huge snowstorm and Arctic cold snap. With the air temperature at -3 F (-20 C), I stepped out on my balcony to take a picture of the morning sky. As I closed the double glass door, I noticed these magical crystals -- they looked like they were floating. Despite the bitter cold, I managed to take this close-up, with smeared sunlight providing a backdrop. Note that the temperature inside the house was 65 F (18 C), very warm in contrast to the temperature on the outside of the door. The delicate crystals formed as water vapor on the inside of the glass condensed to a solid -- frost. Photo taken on November 11, 2012 at 8:44 a.m.
Photo details: Nikon D5100 camera; f/5.6; 1/125 sec. exposure time; ISO 1600; 200 mm.