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By Griff Wigley, on November 1, 2011, 9:56 am
Northfielder Barry Cipra, freelance mathematics writer, alerted me to the one-day (Oct. 21) exhibit at Dean Kjerland’s ArtOnWater Gallery last week: The Art of Mathematics in Wood- a special evening of mathematical puzzles, games, and art. The invitation poster reads:
  This handsome, hands-on collection of puzzles and games can be appreciated on many levels, from novice to expert. There are building blocks for sculpture and design, put-together and take-apart puzzles, arrangement puzzles, sequential movement puzzles, sliding block puzzles, and two-person games.
Loren Larson, professor emeritus of mathematics at St. Olaf College, constructed many of these pieces while working with award-winning mathematics writer Barry Cipra. Come play with the puzzles and join Loren and Barry for an evening of entertaining mathematics. Its free. Light refreshments will be served. Students are welcome.
This Northfield event is part of the international Celebration of Mind in honor of Martin Gardner the renowned mathematical expositor and longtime author of the Mathematical Games column for Scientific American.
See the album of 13 photos (large slideshow, recommended), or SLOW CLICK this small slideshow:
By Griff Wigley, on November 23, 2010, 8:00 am
By Griff Wigley, on March 11, 2010, 8:52 am
  I noticed a ‘Riverwalk Market Fair’ sign on the door of Dean Kjerland’s Art On Water Gallery on Water Street, now home to the Riverwalk Arts Quarter (RAQ).
A Google search on the phrase ‘Riverwalk Market Fair’ brings up a single result, this week’s March 9 City Council packet:
The City has received a request from Riverwalk Market Fair to use public spaces between 2nd and 5th Street (Bridge Square and Riverwalk area) for a summer market. The event is proposed for Saturday’s 9:00 a.m. – 1:00 p.m. from May through October. The proposed market would feature local fine arts, fine crafts, cut flowers, local produce, artisan foods and other products as well as musicians and street performers. The Riverwalk Market Fair has filed to become a Minnesota nonprofit organization.
The RAQ web site and RAQ Facebook group make no mention of this exciting development. Anyone have details?
By Griff Wigley, on December 24, 2009, 6:46 am
  I got a call from Dean Kjerland at Art On Water Gallery yesterday, alerting me to some lily pad-like ice floes circulating below the Ames Mill dam. He wondered whether they were pollution related. Rob Schanilec at By All Means Graphics theorized that last summer’s repairs to the adjacent retaining wall may be causing a different circulation pattern in the water, as he doesn’t remember this phenomenon occurring.
Wikipidia has an entry on ice circles. Evidently, there are two different types. More photos here.
Update 12/25: Patrick Enders emailed me this photo of a single large ice circle at the foot of the dam that he took with his iPhone about 1-2 weeks ago. He says in a comment below that there were two of them.
Update 01/12: Another batch of ice circles has formed during the current cold snap:
  
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