On 19 Feb 2005 at 19:54, Peter L. Peres wrote:

> Why are you saying that ? Remember the dipping bird trick that dips for 
> half a day into a small vessel with 2 ounces of lukewarm water (the 
> water cooling faster from heat loss to the environment than to the 
> bird) ?

Actually the dipping bird has a fuzzy nose and head, the water clings 
to it and cools through evaporation - the "engine" runs on the 
temperature difference between the head and the butt.

Cheerful regards,

Bob

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