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The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
Image credits: Sasha Weilbaker #3 Wetsuits. Unlike whales, beavers don’t have layers of blubber to keep them warm when they dive into chilly water. Instead, their thick fur traps air among the ...
The turn of the century focused on the exotic animals like lions, tigers, leopards, and polar bear fur. The Convention on International Trade in Endangered Species , stopped the exotic animal fur market and the later part of the 20th century focused once again on more accessible fur like rabbit. [ 4 ]
Mammals with darker colored coats can absorb more heat from solar radiation and stay warmer; some smaller mammals, such as voles, have darker fur in the winter. The white, pigmentless fur of arctic mammals, such as the polar bear, may reflect more solar radiation directly onto the skin. [3]: 166–167 [2] Opossum fur
Diffuse reflection - Generally, when light strikes the surface of a (non-metallic and non-glassy) solid material, it bounces off in all directions due to multiple reflections by the microscopic irregularities inside the material (e.g., the grain boundaries of a polycrystalline material or the cell or fiber boundaries of an organic material ...
The fur measures about two and one-half inches in length. It is used mainly for muffs and neck, shoulder pieces. [4] The trapping of fishers is restricted in many States leading to it becoming a more uncommon type of fur in comparison to the mink. Fisher fur is more durable and water resistant than other types of fur such as fox. [7]
The white, pigmentless fur of arctic mammals, such as the polar bear, may reflect more solar radiation directly onto the skin. [ 89 ] : 166–167 [ 109 ] The dazzling black-and-white striping of zebras appear to provide some protection from biting flies.
Figure 3: Bioinspired Macroscopic Carbon Tube Aerogel (CTA) compared with polar bear fur at high magnification [16] Aerogels are able to fill large volumes with minimal material yielding special properties such as low density and low thermal conductivity.