> > Doesn't clothing effect the emissivity of a person? I would think that a > > moderately sized pet (medium size dog) with black fur might emit more IR > > than a person clothed in white, > >As an aside, black objects are better thermal radiation (black body) >emitters than white objects. This is a common misconception because black >objects are also better thermal radiation absorbers. As a further aside, it should be kept in mind that the visible appearance of an object is not a reliable guide to its emissivity in the far IR. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.