24 October 2012 
1 minutes Have you ever noticed the patterns of light reflected from a glass of water or a cup of coffee?
Image adopted from Wikipedia with permission of GNU; created by Heiner Otterstedt.
Image adopted from Wikipedia with permission of Creative Commons; created by Gérard Janot.
The following is an applet for analyzing the curves often seen on the surface of coffee.
Dr. Sabine Segre
Davidson Institute of Science Education
A note to the reader
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