Why are Pengiuns Black?

[Karlos]

What about nuns? I mean at least they have a concious choice...

[Karlos]

@eyso

Going to the other pole, you know polar bears are dark? Their skin anyway. Their fur is not actually white, but translucent, which assists in getting transmitted sunlight to the skin where it provides some degree of warming.

[Karlos]

odin wrote:
So polarbears lose a lot of heat at night :-?.

Nope. The fur conducts visible light to the skin where it is warmed, but the insulating effects of the fur and the fact that it is effectively 'white' make it a poor re-radiator of the accumulated heat.

[Karlos]

cecilia wrote:
actually - I DID know that, Mr smarty-pants! :lol:

Momma din' raise too many dummies!