Body Knowledge: Red Blood, Blue Veins?
There is a common misconception among kids that blood, as it courses through our veins on its return trip back to the heart, is blue. When you look at your arms you see blue veins, but this is a trick of light, or rather a problem with wavelengths. According to Live Science, the blue waves of light are not absorbed by your skin, unlike red light waves, so blue is the color you see because it Read more









