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Monday, November 14, 2011

Forget Radiation Versus Conduction - You Can't Even Figure Radiation

Okay class, here is a simple radiant physic problem.

You have four layers. layer 1, emissivity = 0.9965, layer 2, emissivity = 0.8570, layer 3, emissivity equals 0.7091, and layer 4, emissivity = 0.6092 Calculate the flux from layer 1 at 390Wm-2. to layer 4. Now do the same thing with only 2 significant digits. How's that confidence in your theory hanging in there?


Two significant digits instead of 4 is half the warming.

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