Blue Ice
Have you ever noticed that shadows are blue? It’s most obvious in the winter when they are cast on something white (e.g., snow or ice). This morning it was a bit chilly. Our thermometer ready 6°F. That’s cool even for me so I wore a sweater on my way to work. When I got there I noticed the ice on the small pond next to my office building. The water level had been considerably higher a couple days ago and as you can see, it froze over before it completely returned to its normal level. That left sheets of ice on the lower parts of the bank. In the shade of the morning it was quite blue, but as you can see, the sunlit area at the top is colored normally. So, those of you painting scenery, don’t forget blue for shadows.