jeskill Posted May 2, 2006 Share Posted May 2, 2006 I can't find the reasoning behind the "fourth power law" in my notes, nor a simple enough version of this on the web. This is what I have in my notes: "Fluid flow in animals can occur via diffusion or bulk flow. Diffusion is distance-limited, occurs in the fine capillary networks and has low hydraulic conductivity potential because of the fourth power law" I'm assuming the fourth power law has something to do with the radius of the capillary vs. the radius of a vein or artery. IOW, the reason bulk flow doesn't occur in capillaries is because they're too small. I'm just not sure why it has to be to the fourth power. Can anyone explain? Link to comment Share on other sites More sharing options...
jeskill Posted May 2, 2006 Author Share Posted May 2, 2006 OK, just found a fairly good explanation here: http://courses.washington.edu/biomechs/lect25.pdf Link to comment Share on other sites More sharing options...
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