August 31, 2017

August 30, 2017

Sheep Dog


Sheep station, Australia, 1979.

Photo by I. Peterson

August 29, 2017

Neptune Blue


Neptune Blue Macchia by Dale Chihuly. Sibley Memorial Hospital, Washington, D.C., 2017.

Photo by I. Peterson

August 28, 2017

August 27, 2017

August 25, 2017

Sky Ears


Green Bank, West Virginia, 1977.

See also "Parabolic Detection."

Photo by I. Peterson

August 24, 2017

Columbia Sunflowers


Columbia River Valley, Washington, 1977.

Photo by I. Peterson

August 22, 2017

August 21, 2017

Bike Rack Symmetry


Bike rack. East Tennessee State University, Johnson City, Tennessee, 2008.

Photo by I. Peterson

August 20, 2017

Standing Glass Fish


Standing Glass Fish by Frank Gehry. Walker Art Center, Minneapolis, Minnesota, 2012.


Photos by I. Peterson

August 19, 2017

Stepping Stone


Rock Pine Station by George Trakas. Sarah Lawrence College, Bronxville, New York, 2009.

Photo by I. Peterson

August 17, 2017

Wall Pyramids


Wall Drawing No. 623 by Sol LeWitt. National Gallery of Canada, Ottawa, Ontario, 2000.

"Double asymmetrical pyramids with colour ink washes superimposed."

See also "Stairwell Drawing."

Photo by I. Peterson

August 16, 2017

Squared Octagon


Folk art pattern.

Photo by I. Peterson

August 15, 2017

August 14, 2017

San Jose Sunrise


San Jose, California, 2006.

Photo by I. Peterson

August 13, 2017

Moire Pursuit


Dioximoirekinesis by Irving John Good and Martine Vite. Exploratorium, San Francisco, 2014.

See also "Square Pursuit."

Photo by I. Peterson

August 11, 2017

Ferry Crossing


St. Lawrence River, Quebec, 1974.

Photo by I. Peterson

August 10, 2017

Geometric Gravity


Quark Park, Princeton, New Jersey, 2006.

Photo by I. Peterson

August 9, 2017

Czech Dylan


Prague, Czechoslovakia, 1985.


Photo by I. Peterson

August 8, 2017

Retro Deco


The Gregory Lofts, Pearl District, Portland, Oregon, 2014.

Photo by I. Peterson

August 7, 2017

Bird of Paradise


Bird of paradise flower (Strelitzia), 1979.

Photo by I. Peterson

August 6, 2017

August 5, 2017

Wind Gift


Gift of the Winds by Joseph C. Bailey. Market Street, Philadelphia, Pennsylvania, 2000.

Photo by I. Peterson

August 4, 2017

Fountain Flowers


Longwood Gardens, Kennett Square, Pennsylvania, 1978.


Photos by I. Peterson


August 3, 2017

Library Blocks


Robarts Library, University of Toronto, Toronto, Ontario, 1974.

Photo by I. Peterson

August 2, 2017

Thunder Bay Moon


Thunder Bay, Ontario, 1977.

Photo by I. Peterson

August 1, 2017

Lunenburg Mist


Lunenburg, Nova Scotia, 1974.

Photo by I. Peterson