ScienceDaily (Aug. 24, 2012) — A long-standing mystery in biology about the longer lifespans of bigger creatures may be explained by the application of a physical law called the Constructal Law.*
What this law proposes is that anything that flows -- a river, bloodstream or highway network -- will evolve toward the same basic configuration out of a need to be more efficient. And, as it turns out, that same basic law applies to all bodies in motion, be they animals or tanker trucks, says Adrian Bejan, the J.A. Jones Professor of mechanical engineering at Duke and father of the Constructal Law.
In his latest theory paper, appearing Aug. 24 in the journal NatureScientific Reports, Bejan argues that there is a universal tendency for larger things, animate and inanimate, to live longer and to travel further.
He starts his argument with an examination of the well-known observation in biology that larger animals tend to live longer. Bejan wanted to see if this general rule might apply to inanimate systems as well and proceeded to mathematically analyze the relationship in rivers, jets of air and vehicles.
Read on: http://www.sciencedaily.com/releases/2012/08/120824082532.htm
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