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Open, informed dialogue is the lifeblood of science. "Backscatter" is where we publish letters from our readers. Many of our readers want to continue the discussion begun by an article; indeed some of our most interesting "articles" have been found on the pages of Backscatter.

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Updated 23 December 2005

The "Hot Chocolate Effect"
by Shawn Carlson

So far as I know, this effect was first described by my friend and colleague Frank Crawford. Frank was a professor of physics at UC Berkeley, and a very colorful character. Sometime I should tell everyone the story of how he got shot down over occupied Europe during World War II and spent the next few months evading the Nazis to rejoin his unit in England. His adventures (especially his encounters with lovely French lasses in the underground, which he bragged about incessantly) could have made for a best-selling biography. More.

 
   
Copyright 2005 by Society for Amateur Scientists