Insulation 4 Feathers & Hair 2 – FT

WARM BACKPACKING: If you’re backpacking and you use a duck or goose down sleeping bag, and it compresses or gets wet, you have nothing much to keep you warm. 

DOWN FEATHERS: Fluffy down feathers insulate because they keep an air barrier between the bird and its environment. These insulating down feathers are made of the super-tough protein hemoglobin. 

DOWN FEATHERS: Many baby birds are covered completely by down feathers, making them look like little puffballs. Some birds, like parrots, use their  down feathers powder to help clean them.

DOWN FEATHERS: Birds eliminate unwanted heavy hydrogen atoms through their feathers,

WARM BACKPACKING: If you are backpacking, you can put a rock into your campfire then later wrap it in a towel and put it in the bottom of your sleeping bag to help keep you warm.

WEIRD POLAR BEAR HEATING: Polar bears live in the Arctic regions where temperatures dip to -50º F. They have a two inch to fourteen inch layer of fat that provides some insulation from the cold.  

WEIRD POLAR BEAR HEATING: A polar bear’s fur channels sunlight to its skin for warmth by fiberoptics.

WEIRD POLAR BEAR HEATING: Insulation–like down or hair or fat–is used by animals to stay warm. Air transfers heat and cold poorly so down feathers or hair or fat acts as a good insulator.

WEIRD POLAR BEAR HEATING: Scientists couldn’t figure out how a polar bear keeps itself warm. A hint came when it was learned that polar bears are nearly totally invisible to night vision goggles.

WEIRD POLAR BEAR HEATING: Polar bears heat themselves by their own light!