Encore - Frosty Feathers and Flowers

September 01, 2018

Frosty feathers and flowers

Every Saturday Earth Science Picture of the Day invites you to rediscover favorites from the past. Saturday posts feature an EPOD that was chosen by viewers like you in our monthly Viewers' Choice polls. Join us as we look back at these intriguing and captivating images.

Photographer: Mary Brown
Summary Author: Mary Brown 

January 2013 Viewer's Choice As shown above, my kitchen window was coated one morning several weeks ago with a frosty decorative display. It looked like a garden or feathers and flowers. Below freezing temperatures on the outside of the window and moist air on the inside led to the frost formation. The low temperature of the glass (very cold outside air) allowed the moisture to go directly from a gaseous state to a solid state. If the window glass weren't as cold as it was on this early winter's morning, then any water vapor on the inside of the pane would have likely just formed an icy layer on the window. Dust, scratches and glass imperfections all influence the design of the frost patterns. Photo taken on December 1, 2012 near Bark Lake, Ontario, Canada.

Photo Details: Camera Model: Canon EOS REBEL T3i; Focal Length: 45.0mm; Aperture: f/6.3; Exposure Time: 0.010 s (1/100); ISO equiv: 100; Software: Adobe Photoshop CS3 Windows.