Merypopey asks:

How do I prove veins are not blue and blood is red

How can I make an experiment proving my question of why are veins blue and blood red?
In Topics: Science fair
> 60 days ago


Answers (1)

jirwin writes:
Our veins look blue because we are looking at them through our skin.  Blood of course (as we all experience when we cut ourselves is always red).  To prove that looking at our blood through our skin is what is causing the blue color, go find a red light (perhaps from Christmas lights) then get tissue paper of various colors and thicknesses.  Hold them up to the red light and see how the light coming through the tissue paper changes color.  This is based upon the same principle.

Below is a good site to learn more about colors:
> 60 days ago

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