https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/ Sat, 15 Aug 2009 10:50:30 +0000 hourly 1 https://wordpress.org/?v=6.4.6 https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5944 Sat, 15 Aug 2009 10:50:30 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5944 Jeez, from the link, I thought this was going to be about horseshoe crabs…

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5943 Mon, 07 Apr 2008 10:03:31 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5943 Veins are blue in the same way the the sky is blue. If you look at them, they look blue, so they are blue . Unless you dissect them out and clean them up.

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5942 Mon, 07 Apr 2008 09:13:59 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5942 …so what colour are veins?Posted by: meiamzzVeins are a pale pink-tan and are translucent. The blue colour as seen through pale skin is explained in the article that Dave S. posted.

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5941 Sun, 06 Apr 2008 17:26:12 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5941 I’ve heard that Paul Revere was blue-ish.

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5940 Sun, 06 Apr 2008 17:24:59 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5940 People eat off of silver all the time and their blood does not turn blue. Are silver workers blue?

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5939 Sun, 06 Apr 2008 14:53:48 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5939 Actually, George is right – at least on the second half of his statement – there is a man who has ingested silver colloid for years and he has blue skin. Search for “blue man -group”.

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5938 Sun, 06 Apr 2008 11:58:00 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5938 See also:http://exn.ca/Stories/1996/11/29/02.asp

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5937 Sun, 06 Apr 2008 11:47:18 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5937 I think they refer to methemoglobinemia as “blue baby” syndrome. That’s what I heard learning about ground water (the condition was aid to be caused by high concentrations of dissolved nitrate).

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5936 Sun, 06 Apr 2008 11:40:24 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5936 Like Achuah, I use the example of venous blood in a vacuum collection tube as an example. This paper from Applied Optics (pdf) takes an objective, experimental approach to the question. Their conclusion is that it is variable transmittance of different wavelengths of light through the various tissues that produces the blue vein effect.

]]> https://gregladen.com/blog/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5935 Sun, 06 Apr 2008 11:29:19 +0000 http://scienceblogs.com/gregladen/2008/04/05/is-blood-ever-blue-science-tea-1/#comment-5935 George: I don’t believe that yet.KL: Thanks’ for that paper!

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