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103 Comments
- theRIAA, on 10/10/2007, -2/+69fingers + flashlight = red
- redlemon, on 10/10/2007, -0/+47spoiler = no
- ToKnow, on 10/10/2007, -1/+31Dugg since the article explained it quickly and to the point in contrast to my confused teachers.
- sephiroth965, on 10/10/2007, -0/+24Blood isn't blue at ALL. Oxygen carrying blood is bright red. Blood not carrying oxygen is dark red.
- tehWyman, on 08/19/2009, -5/+28I always hated this in science class when I was younger.
Our teacher never knew the answer, either. Gotta love public schools. - tehpwnrate, on 10/10/2007, -0/+22Apparently better ones.
- inactive, on 10/10/2007, -0/+16You bitch!
- VeganG, on 10/10/2007, -0/+15Hemoglobin sounds like a Spider-man villain.
- davAbran, on 10/10/2007, -1/+15Why is the sky blue? How exactly does the posi-traction on a plymouth work? It just does.
- Nick22, on 10/10/2007, -0/+14interesting, I learned in school blood is blue before it gains oxygen, aparantly they were wrong. and to think that i was gonna bury this
- zzz@tkz, on 10/10/2007, -1/+13Yes.
- virtualball, on 10/10/2007, -0/+10QFT from the comments: "Imagine how upset the Crips will be"
- turpenine, on 10/10/2007, -1/+10rtfa?
- masgrada, on 10/10/2007, -2/+11Partly true. It is the oxygen+heme that is red. Once hemoglobin is combined with other gases your blood can be anything from green to purple.
- ydt89, on 10/10/2007, -0/+8Correction... "Panic! At the Disco" even more sad that i took the time to correct you.
- Hindu_Wardrobe, on 10/10/2007, -0/+8Do you listen to Panic at the Disco and wear girls' pants, too?
- lcvick7atlanta, on 10/10/2007, -2/+9I bleed black.. am I the only one?
- holygram, on 10/10/2007, -0/+6Reddish blue.............like purple?
- dvsbastard, on 10/10/2007, -1/+6Sorry but he is wrong (but he has the right idea)...
FTA: "Seeing a vein as blue through the skin is because of the layer just below the epidermis and dermis, the two outer layers of skin."
It is not the colour of the top layer of the skin (where a tan is present) but the layers below.
Think of it this way - Why doesn't your average pasty white nerd have red visible veins then?! - Caleb83, on 10/10/2007, -0/+5What will happen when the blue-bloods find out?
- mtrip, on 10/10/2007, -0/+5It's dark red.
- Shadow6363, on 10/10/2007, -1/+6Hmm, in your third sentence, didn't you just say that oxygenated blood is both red and blue?
- inactive, on 10/10/2007, -1/+6We covered this in my 6th grade science class...
- jimsf, on 10/10/2007, -2/+6Wrong! That is blood that has already been oxygenated by your lungs. Nice try though.
- iGeoUK, on 10/10/2007, -0/+4*colour
- drmangrum, on 10/10/2007, -0/+4Have you never had a blood sample taken? Blood is drawn in by means of a vacuum tube, there is no oxygen present. Your blood still comes out a dark red. The various cells in the body will never be able to fully strip the oxygen from red blood cells, blood will always retain a red tint.
- holygram, on 10/10/2007, -0/+4Blood's purpose is to tell you that you need a band-aid brand adhesive medical strip.
- CompIsMyRx, on 10/10/2007, -0/+4That's Sulfhemoglobinemia. http://en.wikipedia.org/wiki/Sulfhemoglobinemia
Happens with certain medications, and if you eat TNT. - iignotus, on 10/10/2007, -0/+4Wait what? Since when does it take less energy to bring cold water to its boiling point than hot water? I think you need to check your facts a bit, and start with a third grade science book.
- masgrada, on 10/10/2007, -0/+3Different drugs can do crazy things with your blood color as well.
- Satanael, on 10/10/2007, -1/+4Oh my god it's 8th grade all over again. Blood is red god damn it.
- tehpwnrate, on 10/10/2007, -1/+4Well, his point was that the part that protects us from the sun's UV is coloring the blood blue to our eyes, and that's what tans are for. So he kind of extrapolated. His general point is still correct.
- JEWestbrookJR, on 10/10/2007, -0/+3Wow.... I was pretty sure that everybody learned this in grade school. It's really ***** easy... Arteries are red because blood has plenty of oxygen causing the red color. Veins are a blue-ish color because that is the way blood reacts with lack of oxygen. If you cut a vein, you get red blood because the air introduces oxygen to the cells.... Same reason you turn blue if you can't breathe... This isn't rocket science, people.
- hirak99, on 10/10/2007, -1/+4Well I am not sure the article is right either. If something reflects blue and absorbs other colors, then it's blue. If dark blood reflects blue, then it is blue.
- Dochtuir, on 10/10/2007, -1/+4Water boils at 100.
- Klowner, on 10/10/2007, -0/+3That reminds me of some article I read a few months back, some dude had surgery and his blood was dark green because the medication he was on increased sulphur concentration in his blood or something, pretty weird.
- Astaro, on 10/10/2007, -0/+2you are probably getting confused with the Mpemba effect.
Which says that some hot liquids can freeze faster than cold samples of the same liquid. - turpenine, on 10/10/2007, -0/+2veins can also carry oxygenated blood. you lose.
- wushin, on 10/10/2007, -0/+2Wrong. How exactly does the posi-traction on a plymouth work? Hella or bitchin or hella bitchin.
- stklaw, on 10/10/2007, -1/+3How do you get redish blue?
They are two opposite colors. - joot2112, on 10/10/2007, -0/+2100 Celcius = 212 Fahrenheit
- tehpwnrate, on 10/10/2007, -1/+3Are you saying that the tube they use is a complete vacuum? Because any air in there could put oxygen in the blood. You're right about the color, I'm just questioning the reasoning.
- scojerroc, on 10/10/2007, -0/+2red and blue are not opposite colors.
- leprasmurf, on 10/10/2007, -0/+2your theory would be fine, except for the fact that a needle is not a vacuum. It's sterile, but still contains oxygen. I don't know why I'm getting modded down for telling a real life experience I had, but it's rather discouraging. I thought the digg community was suppose to be smart.
- DarKnight90, on 10/10/2007, -0/+2Yeah even movies get it right. When someone gets shot and dies and blood slowly runs out over the floor it's dark red (vein) but when someone gets slashed or something and blood squirts out it's a brighter red (artery). And in really old horror movies blood is orange because the people who made it are retarded.
- catxors, on 10/10/2007, -0/+2Damn it! Stop posting all these comments saying that veinous blood really is blue! It's one of the lamest 'scientific' misconceptions ever, and here this article helpfully debunks it, and you're trying to bring it back? Did you not read (or notice when having blood drawn) that venous blood drawn into a vacuum tube is *not blue*?!? Arggghhhh!!!!!!!!
- bagboyrebel, on 10/10/2007, -1/+3It's kind of like greenish orange.
- mpitt, on 10/10/2007, -0/+2Also, the article indicates that the blue color observed is blue due to the fact that the only color of light reaching the veins through our light resistant skin is short wavelengths (blue). So, our veins are reflecting blue light not because they are blue but because that is the only color of light to reach them. Buy yourself one of those blue tinted light bulbs and use it in complete darkness and everything will have a blue cast to it.
- joot2112, on 10/10/2007, -0/+1Arteries carry the oxygenated blood to your cells. After the cells use the oxygen, the blood is then mostly unoxygenated. The veins carry that unoxygenated blood back to your heart, which pumps it to the lungs, where it picks up oxygen again, goes back to the heart, then out to your body again.
- totorototoro, on 10/10/2007, -1/+2The question remains though...even though those original diagrams of the heart were wrong-showing blue and red blood...is oxygenated blood a different shade of red than oxygen depleted blood?
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