today i learned – fri 30th june 2017

right, before we get started, i need to be totally honest with you … this post has been posted late due to me spending lots of time tonight playing with a porsche 😅 #soz

either way … i’m still counting it as friday’s post 💁🏼. as long as i still post again for saturday, surely it still counts? anyway … as usual i’m on a tangent.

#tdil polar bears aren’t actually white 🐻 (there’s no polar bear emoji 😢). 

it’s true! you know those huge white bears that stroll around the arctic tundra? they aren’t white at all (#lifeisalie) they’re actually black!?

you see, polar bear skin is actually black, you just don’t see it because of all the fur. the madness doesn’t stop there however; that ‘white’ fur that sits on top of the black skin isn’t white either! 😳

wondering how that’s possible true? 🤔 well, polar bear fur is actually made up entirely of clear hollow tubes called ‘guard hairs’. it’s simply due to reflected light that it looks white.

this incredible optical illusion is ideal for polar bears as it allows them to seamlessly blend with the snow and ice whilst hunting for food.

now, when i first learned about this, i read it as “polar bears are white because of reflected light from their surroundings … therefore, if you stuck one in the jungle it’d turn green”. please be aware that this isn’t the case at all!

polar bears appear white because of the way that light bounces and bends in between each of the clear hollow tubes – it’s the same principle that makes toothbrush bristles appear white even through they’re also clear.

and there you have it! 😀 polar bears are actually black skinned bears that are covered in fur made of clear tubes … how mental is that?! if that’s not a pub quiz winning fact, then i don’t know what is 😂

right, this post is late enough … i think it’s time for sleep 😴

goodnight y’all 😍 #tdil

_____

you know what, this one turned out a lot more interesting than i originally thought it would 🙂. fancy reading some more interesting facts? simply go ->here<-

(we’ve gone for a lovely picture of some polar bears today 🙊 dem so cute! license is ->here<-)

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