Biological Question

What's reason thats milk see like in white colors not other colors like red.

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  • White objects in nature appear such when there is some level of light diffusion going on and no part of the visible spectrum gets reflected off the object any more than any other part of that area of the light spectrum.  So as you might guess from that, these casein proteins and some of the fats in the milk scatter and deflect light somewhat uniformly throughout the visual spectrum.  This results in milk being fairly opaque and appearing white to our eyes.  Without the fats though, casein itself tends to scatter the blue wavelength slightly more than red.  So with something such as fat free skimmed milk, you’ll sometimes see a very slight blue-ish tinge to the otherwise white milk because of this.
    Milk also contains riboflavin, which can give the milk a slightly green-ish tinge, if the concentration is large enough, such as can also be seen sometimes in certain types of skimmed milk or whey products (the riboflavin is in the whey portion of the milk).
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