May 30, 2008
Diet Coke and Mentos: Why the Reaction?
It's been well documented, both by David Letterman and in thousands of YouTube videos, that combining Mentos breath mints with Diet Coke produces a thrilling eruption. But why?
Tonya S. Coffey, an assistant professor of physics and astronomy at Appalachian State University, had her sophomore-level physics students answer that question, and she has published their findings in the June 2008 issue of the American Journal of Physics.
The students measured how far different
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