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Is Polar Bear Fur White Or Transparent

Is Polar Bear Fur White Or Transparent

The polar bear is a formidable inhabitant of the northern hemisphere of the Earth. He loves to eat seals, floats on drifting ice, and is the hero of many cartoons. It would seem that even the name of the bear speaks of what color his coat is - of course, white. Would you believe that the polar bear's coat is not white at all, but transparent?

As you know, the color of a substance is determined by how much of the visible light this substance is capable of reflecting. For example, blue ink does not transmit light waves, the length of which corresponds to blue. For an object to be black, it must absorb all light directed at it, and for it to be white, on the contrary, reflect. If the object is transparent, then the light simply passes through it.

Each hair of a polar bear is just a transparent hollow tube filled with air. Nature gives the bear this amazing feature so that it retains heat better. It turns out that if the hair is transparent, then the light must pass through it and reach the skin, which is black in polar bears. But then the question should be like why the color of the polar bear is not black. When sunlight hits the bear, it goes through a complex scattering process, and it is no more than a small amount of light that is reflected.

Finally, the light without penetrating the fur is reflected towards the observer, who perceives the fur as white. Why white? Because the light that comes to us from the sun is a combination of light waves of different lengths, which together give a white color.

So, isn't it time to call the polar bear "transparent"?