Shweta Jain
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Posted 5 year ago
Blood in your veins is not blue – here's why it's always red
1 Answer(s)
Sunita Shirtode
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Posted 5 year ago Sunita Shirtode

Actually blood is red because of hemoglobin in it. Veins look blue because light has to penetrate the skin to illuminate them blue and red light penetrate with different degrees of success. What makes it back to your eye is the blue light.