March 24, 2017

March 22, 2017

Cloaked Owl


Alma Mater (detail) by Daniel Chester French. Columbia University, New York City, 2017.


Photos by I. Peterson

March 21, 2017

Reclining Figure


Reclining Figure by Henry Moore. Columbia University, New York City, 2017.

For other Henry Moore sculptures, see "Knife Edge Guard" and "Henry Moore at MIT." 

Photo by I. Peterson

March 20, 2017

Zigs and Zags


Northwest Corner Building. Columbia University, New York City, 2017.




Photos by I. Peterson

March 19, 2017

Half-Cylinder Sundial


Camp Columbia Sundial. Columbia University, New York City, 2017.

For other sundials, see "Como Sundial," "Spherical Sundial," and "Giant Sundial."

Photo by I. Peterson

March 18, 2017

Columbia Curl


The Curl by Clement Meadmore. Columbia University, New York City, 2017.


For more on Clement Meadmore, see "Bending a Square Prism."

Photos by I. Peterson

March 17, 2017

Gallery Cutouts


East Building skyline, National Gallery of Art, Washington, D.C., 2008.


Photo by I. Peterson

March 16, 2017

Polyhedral Lamp


Polyhedral lamp by Hans Schepker. On display at the Joint Mathematics Meetings, New Orleans, Louisiana, 2007.


Photo by I. Peterson

March 15, 2017

City Shades


Hotel room view. New York City, 2014.

Photo by I. Peterson

March 13, 2017

March 12, 2017

Gaussian Primes


Representation of Gaussian primes. Mathematics Department, University of Nebraska, Lincoln, Nebraska, 2012.

Photo by I. Peterson

March 11, 2017

March 10, 2017

Stair Twist


Revolutions by Michel de Broin. Papineau subway station, Montreal, Quebec, 2010.

See "Knotted Staircase."

Photo by I. Peterson

March 9, 2017

Silo and Pond


Pond reflection of an abandoned silo. Rock Bridge Memorial State Park, Missouri, 1980.

Photo by I. Peterson

March 8, 2017

Squirrel Food


Campus squirrel. Kalamazoo College, Kalamazoo, Michigan, 2011.

Photo by I. Peterson

March 7, 2017

Observatory on Ice


Newton Memorial Observatory. Allegheny College, Meadville, Pennsylvania, 2010.

Photo by I. Peterson

March 6, 2017

Beach Clutter


Ocean City, Maryland, 1979.

Photo by I. Peterson

March 5, 2017

Lumber Ends


Railway yard lumber stack. Brandon, Manitoba, 1976.

Photo by I. Peterson

March 4, 2017

Intersecting Arcs


Foyer artwork. Van Vleck Hall, University of Wisconsin, Madison, Wisconsin, 2012.


Photo by I. Peterson

March 3, 2017

Lexington Keyhole


Keyhole sculpture. Lexington, Kentucky, 2011.


For another example of a keyhole sculpture, see "Granite Keyhole." 

Photos by I. Peterson

March 2, 2017

Stretched Time


Outdoor wall mural. Cordell Avenue, Bethesda,Maryland, 2017.


Photos by I. Peterson

March 1, 2017

Derelict Boat


Abandoned boat. Kingston, Ontario, 1975.

Photo by I. Peterson