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Re: [Hammock Camping] Radiation/absorption question

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  • dlfrost_1
    ... camouflage? Probably for both reasons. The hairs of a Polar Bear are almost clear and are hollow. The white appearance comes from the even scattering of
    Message 1 of 12 , Oct 31, 2004
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      --- In hammockcamping@yahoogroups.com, "Randy Saylor" <r.saylor@s...>
      wrote:
      > Why are polar bears white? Is it to reduce radiation or give good
      camouflage? Probably for both reasons.

      The hairs of a Polar Bear are almost clear and are hollow. The white
      appearance comes from the even scattering of light and is vital for
      camouflage, as these animals are mainly ambush hunters. Because of
      the internal scattering, the fur is also efficient at absorbing
      infrared warmth from the sun. Their skin is dark back to protect
      against UV light. (This why you see black around the eyes and nose--
      the fur is thinnest there.)

      Doug Frost
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