why our veins are greenish in colour? Although it carries red colour blood.
Answers
Green light also has a shorter wavelength than red, which means most green light is deflected back, as well. This gives your veins the appearance of being blue or green. (You can test this yourself by shining different colors of lights on your skin. When you shine a red light, your veins will show up as darker red.
why our veins are greenish in colour? Although it carries red colour blood.
Under normal light, blood appears red because most colours are absorbed except for red, which bounces back from the blood. Every colour but red is absorbed by the oxygen-carrying pigment haemoglobin (Hb). If a filter that blocks the reflected colour is positioned between the blood and the eyes of the person looking at the veins, the perceived colour changes. In the case of humans, the skin serves as a filter for the colour red, and the colour is therefore perceived as green. The exact colour spectra is determined by the relative levels of oxygenated iron (HbO) and carbon dioxide in the blood. High levels of oxygen reflect red, and high levels of carbon dioxide reflect blue, which, when mixed with the yellowish colour of fat and or the skin, end up looking green.
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