Thought for the month

“You know," said Arthur, "it's at times like this, when I'm trapped in a Vogon airlock with a man from Betelgeuse, and about to die of asphyxiation in deep space that I really wish I'd listened to what my mother told me when I was young." "Why, what did she tell you?" "I don't know, I didn't listen.” From The Hitchhiker's Guide to the Galaxy, Douglas Adams, Author (1952-2001)

Wednesday, 19 May 2010

Fractional derivatives have physical reality

Proof has finally been achieved for Boltzmann's 140-year-old gas equation which predicts the motion of gas molecules. Robert Strain and Philip Gressman at the University of Pennsylvania have shown that Boltzmann's equation will always produce the right answer for gases that are close to equilibrium, such as the air in a building close to room temperature. However, they still can't say whether the equation holds in more complex situations, such as a storm.
www.newscientist.com/article/dn18931-proof-at-last-for-boltzmanns-140yearold-gas-equation.html

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