Snakeskin Frost and Other Curiosities

January 12th, 2010
You can see a lot on just one black car. The nearly uniform appearance of white frost shows, upon closer inspection, a variety of forms. The first black car of yesterday morning didn’t seem so striking, and I considered passing it by. But, thinking of… more »

Frost World

January 9th, 2010
Whenever I am taking a picture on macro near the maximum close-up to an object, the aperture on my little Canon automatically sets to the maximum size, which means that the resulting  images  are in focus only at the center. Ever since I got the camera… more »

They Came From Out of the Tub

January 8th, 2010
Last night it rained, but the skies cleared before morning, letting the air temperature drop to about 2 degrees C. The weather, it seemed, would be perfect for lacy white frost patterns on cars. But it didn't quite turn out that way. A little bit before… more »

The Crystalline Beard

January 5th, 2010
I have very often in a Morning, when there has been a great hoar-frost, with an indifferently magnifying Microscope, observ'd the small Stiria, or Crystalline beard, which then usually covers the face of most bodies that lie open to the cold air, and… more »

White Snow, Black Snow, Pink Snow, Blue Snow

January 3rd, 2010
Hands down, my favorite book for browsing is M. Minneart’s The Nature of Light & Color in the Open Air. This small, easy to carry (and cheap if you get the Dover edition) book has 233 short sections on things one can see 'in the open air'; for example,… more »

Ice of Hearts

December 28th, 2009
Back when I lived in Boulder CO, I worked with Charles Knight on developing a new way to grow ice crystals for experimental study. I knew that the problem with most methods was twofold: there were too many crystals too close together to be able to learn… more »

Hoar in a Hole

December 26th, 2009
A hole in the ground is a good place to look for large hoar crystals. Next to some rice paddies, just uphill from the tubs, lies a few small holes in the cement roadway. From eye level, the white tinge of hoar frost just inside the lip is easily… more »

Oddly Glazed Bathtub

December 26th, 2009
I often see curious ice patterns on the surface of frozen water. On Christmas morning, I saw this strange pattern on one of the farmer's outdoor bathtubs. The foreground region looks a little like terraced rice fields on both sides of a mountain pass,… more »

Reflections off Falling Crystals

December 26th, 2009
On my morning icespotting trip the other day (12/23), I caught a glimpse of an unusual sight - a sun pillar. I thought I saw one once last winter, but this one was unmistakable. It seemed more striking even than the one in Robert Greenler's book… more »

It Came Out of the Sky

December 26th, 2009
Our first snowfall this season came overnight with a howling westerly, but left just a light dusting. Only certain surfaces with a wide view of the sky were cool enough to preserve the snow. The only place in our yard was the roof of our car, which I've… more »