The 2002
James "Duke" Sehnert 
Memorial Lecture
This year's Sehnert lecturer will be
Ivars Peterson
Mathematics Writer and Online Editor for Science News

The lecture will be held Monday, October 28, 2002 at 7:30 pm, in room BEP 200 (Business-Education-Psychology Center):

MOEBIUS MADNESS

Since its discovery in the 19th century as a mathematical object of interest, the astonishing one-sided, one-edged Moebius strip has confounded and fascinated generations of people, inspiring magic tricks, stories, patents, logos, artworks, cartoons, movies, fashion statements, playground equipment, and much else. Learn more than you ever thought possible about this intriguing twist of mathematical imagination.

Also Monday, at 3:05 pm, room ST 245 (Applied Science and Technology Center):

CHAOS IN NEWTON'S CLOCK

The Tilt-A-Whirl amusement park ride serves as wonderful, contemporary example of chaotic dynamics in a physical system. Historically, nonlinear dynamics and chaos first surfaced in the disturbingly irregular movements of the "wandering" stars and particularly the moon. The remarkable insights of Johannes Kepler, Isaac Newton, and Henri Poincare led the way to celestial mechanics and modern notions of chaotic dynamics.

We encourage high school teachers and high school students to join us for these special events!

High school teachers: At 6:00 pm, come yourself and bring a few students and join us for a free dinner in the University Center Cafeteria. If you can make it for dinner, please call the Math Dept. office at (859) 572-5377, by noon on Friday, October 25, so that we may plan accordingly. Note: if you want to bring more than two students, be sure to call and check on availability of space for dinner (space may be limited).

Sponsored by the Mathematics and Computer Science Department at NKU. For further information, contact Dr. Andy Long at longa@nku.edu or by phone at (859) 572-5794. A campus map is available at www.nku.edu/~library/info/nkumap.html