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Re: Plate movement in Stegasaurs



rstephen@cswnet.com (Roger A. Stephenson) wrote:

> It would seem that without some movement [of stegosaur plates -- MR]
> the alleged radiator effect would be lessened.

The comparison with dog hair isn't terribly appropriate.  The plates
could easily change their radiative properties via pigment migrations
and the selective opening and closing of the blood vessels feeding
them.  Any flapping-mediated increase in heat transfer would be
negligible in comparison.  Unless you propose that they spun around
like fan blades...

-- 
Mickey Rowe     (rowe@lepomis.psych.upenn.edu)