How much 'hotter' can eyes be as compared to the rest of the body?

Subject: How much 'hotter' can eyes be as compared to the rest of the body?

Date: Fri Jun 30 01:17:03 2000
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Area of science: Zoology
ID: 962342223.Zo

Message:


While viewing a PBS program about African animals, I was absolutely 
astounded that, during a sequence filmed with night vision cameras, the 
eyes of the animals were many times brighter than the animals' bodies!  
Since night vision technology (to my knowledge) captures information in 
the infrared spectrum (i.e., 'heat'), just how much hotter than the rest 
of the animal are its eyes?  Are the eyes producing more energy than the 
rest of the body?  Could they even be reflecting heat from the environment?

Re: How much 'hotter' can eyes be as compared to the rest of the body?

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