2007-09-21 12:17:29 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
Yes I read that somewhere on the web about the hair being colorless to visible light. If not I would never have believed it (have visited zoos with polar bears all my life and they always looked white and yellowish to me).
2007-09-21 12:22:56 · answer #1 · answered by Rich Z 7 · 0⤊ 1⤋
It most certainly is clear and it is NOT an urban myth that their is a noticeable trapping of heat. Thermal Infrared (heat)light striking the fur is refracted towards the body. IR can only travels toward the body in the hairs it can not travel away from the body inside the hair. The scientists for some reason used ultraviolet!!??!!???? Why? They should have been using IR. The same IR that the bears skin would be emitting. duh!!! This is an example of poor research.
A polar bear is so well insulated that Inra red sensitive film does not pick up a polar bear at all EXCEPT for the occassional puff of breath.
2007-09-21 15:42:28 · answer #2 · answered by Jeff Sadler 7 · 0⤊ 0⤋
Believe? I know for a fact the color of polar bear skin and fur. The skin is a mottled black. The fur appears white, off white, or creamy white depending on the time of year and age of the polar bear. However, the fur is actually transparent.
"If you could magnify one of the polar bear's hairs, you'd see a hollow transparent tube with no color. The polar bear's hair appears white to us because the rough inner surface of the hollow hairs reflect visible light. Ultraviolet light from the sun travels down the core of each hair where it is soaked up and stored by the bear's black skin."
http://bronxzoo.com/bz-about_the_animals/263856/263945/264797
2007-09-21 12:57:43 · answer #3 · answered by Anonymous · 1⤊ 0⤋
it rather is, in actuality, real. it would desire to be much less annoying to comprehend in case you're taking a glance at sandblast engraved glass. The glass is obvious and has by no ability been dyed, yet the place it somewhat is been sandblasted, the microscopic shape scatters mild in basic terms as defined and curiously white. in case you prefer, you are able to coach it to your self by ability of taking a scrap piece of sparkling glass and sand it utilizing a extreme-grade, 250 to 3 hundred grit sandpaper on it (use garnet sandpaper because of the fact it somewhat is extremely greater durable than glass). as quickly as the glass is carefully roughened, it somewhat is going to look white. an identical difficulty will take place whilst the glass is carefully crammed with microscopic bubbles, yet i won't be in a position to think of of a easy genuine-existence occasion which you may have get admission to to so as to be sure for your self. in actuality, whilst something is obvious, it would not distort the rays, and you notice them as they arrive off of the products in the back of the glass, with the contemplated hues pertinent to the object. even however, blend up those rays by ability of scattering them, and the colours combination, and in a accepted ecosystem (the place hues are gently allotted in frequency) this form of mixing will consequence in white mild. think of of it as swirling each little thing you may see via the sparkling glass including a extreme velocity blender so each of the colour mixes at the same time without being separate any further.
2017-01-02 12:14:01 · answer #4 · answered by ? 3 · 0⤊ 0⤋
yes, ive seen and looked at a polar bear pelt
2007-09-21 12:34:05 · answer #5 · answered by cero143_326 4 · 0⤊ 0⤋
Yes because it makes it easier for their black skin to obtain sunlight.
2007-09-21 12:23:00 · answer #6 · answered by apocalypso 4 · 0⤊ 1⤋
Yes, I believe it. If it really is true then its skin must be very pale in color.
2007-09-21 12:25:36 · answer #7 · answered by Genavieve T 2 · 0⤊ 2⤋
yes it is also hollow cool huh
2007-09-21 12:22:03 · answer #8 · answered by suzypjs2000 3 · 0⤊ 0⤋