Rainbow-painted dome ceiling in the Toronto airport

An "art car" at Maker Faire, totally covered in yarn. Amazing!

Another "art car" (a Volkswagen Beetle, actually), covered in aquarium rocks. Taken at Maker Faire, in Austin Texas, October 2008.

The underside of a mottled palm in California

Millikan Library, Caltech

Arches on the rooftop at Beckman Auditorium, Caltech. This is a peculiar building, a significant departure from the Mission Revival style of the older buildings on campus. For a while in the 60s and 70s, architects on college campuses everywhere decided they needed to be "different", and we wound up with buildings that leave us wondering, "should that be here?" Still, I'm a sucker for interesting geometric patterns.

A colorful knot in an old snag.

Raindrops on the grass

Three windows on Braun at Caltech. The travertine panels are like those at The Getty Museum.

Palomar Observatory

Millikan Library at Caltech, with reflections from the pond.

An experiment with zoom-during-exposure on an unnamed waterfall in Mount Rainier National Park, Washington

Before it becomes sand, it's a rock.

A lupine in my backyard. I sprayed it with the "mist" setting on my hose, and thought the little beads were cool.

I was bored on a winter weekend day a few years back and got inspired by the drip tray in my espresso machine. Turns out the spacing of the holes was just right for holding some clear glass marbles. This shot has a flower underneath the tray, lit from the side by a few flashlights. It's kind of like looking through a compound eye!

Looking up at the dome of Palomar Observatory, here tipped 90 degrees from reality. I think this looks rather like a sail.

A close-up of the ice on Dream Lake, Rocky Mountain National Park, Colorado. The ice there freezes in these amazing wave patterns from the near-constant wind. If you look carefully in this shot, you can see the mountain range reflected in the ice ripples.

Once on a business trip to New York I went to see some folks at Columbia University on a rainy day. I found the interplay of the umbrella and floor patterns quite irresistible!

Long exposure of a creek in Rocky Mountain National Park, Colorado, September 2012

An orange and red aspen leaf in the snow, along Old Flowers Road, Colorado. October 2011.

Millikan Library at Caltech, with reflections from the pond.