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The Coffeecup Caustic

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Visit this site: http://www.ballandclaw.com/Caustic/

Author:Roy Williams
Description: You are drinking from a cylindrical cup in the sunshine. Sometimes, when the sun shines into the cup, you can see a crescent of light as the sunshine reflects from the inside of the cup onto the surface of the drink. This Java applet illustrates the optics involved.

Levels: Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Documents/Sketches/Galleries, Web Interactive/Java
Math Topics: Conic Sections and Circles, Optics

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