Trudy E. Bell, M.A.
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1913 Flood - Articles and Research
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Craig B. Waff, Ph.D., 1946-2012
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Telling a story without words
Wildflowers of the southwest
Human costs of fracking
The secret life of insects
Victoria, Australia
Death Valley
Ohio River floodwall murals
NASA's new airborne observatory SOFIA
Bicycling the C&O Canal towpath
Weather and atmospheric optics
Portrait photography
Black and white film photography
Science Education Summit
Science Writer
Photography
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circum-axial leaf trails 2007 and how they were made.JPG
circum-axial leaf trails 2007 and how they were made.JPG
2/27/2011 8:51:41 AM
I set my Canon EOS Rebel XT digital single-lens reflex (predecessor to the Canon EOS 50D I use now) to ISO 100 and a slow shutter speed - the best results came with 1/13th second, with an 18-mm wide-angle lens. I sat in the center of an old playground merry-go-round with my head and camera over the axis shooting straight up at overhanging tree branches, while my 12-yr-old neighbor Max (son of a studio photographer) kept me spinning.

(One editor friend quipped on seeing the images: "Losing your lunch for science!" Well, kinda - after the shoot, it must be admitted that I felt queasy for hours.)
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