Yes, I know its very old, I’m in Science 30 at school and the topic of blood color in veins comes up a few times when studying the human circulatory system.
In this Staff Report it states that Blood traveling through veins in not in fact blue like we see it, but a dark red. The explanation is the whole light wavelengths, absorbtion in skin, faulty colors thing. Which, does make sence after I thought about it.
What I question is this:
Alright, the experiments had a flaw. Look, if I were to slice open my vein right now its obvious that blue blood would not squirt all over the place. Keep in mind, that Veins have blood that has No oxygen in it. If I were to slice my vein open the “Blue” blood would immediately touch our oxygen filled air, and instantly become red again. Giving us the idea that it is always red in the first place.
In the experiments they both drew blood from veins, but the moment that the blood was drawn it came into contact with oxygen filled containers; it became dark red.
Perhaps the only way to properly prove that Veinous blood is blue, is by exposing an open vein in outer space? What do you think?