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gmf_lecture4 - time to random walk a distance R Fluid...

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The Art of Estimation Physics The Art of Estimation Physics Patrick Diamond, George M. Fuller, Tom Murphy Department of Physics, University of California, San Diego I. Statistical Mechanics for Dummies Ph 2239 also known as
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Handy Facts: Solar System radius of earth’s orbit around sun
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Handy Facts: the Universe
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a. Fluids, Transport, Turbulenc
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Mean Free Path/Time diffusion constant
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Random Walk
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Unformatted text preview: time to random walk a distance R Fluid Dynamics – for the impatient Really, nothing more than energy-momentum conservation Kinematic Viscosity Perfect Fluid: No viscosity and no heat flow in a momentarily co-moving rest frame Example: photon viscosity (radiation dominated) viscosity Reynolds number “The Feynman Lectures on Physics”, Vol. II, Figure 41-6...
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