单词 | Chapman equation |
释义 | Chapman equation [`chap·mǝn i´kwā·zhǝn] GEOPHYSICS A theoretical relation describing the distribution of electron density with height in the upper atmosphere. STATISTICAL MECHANICS The relationship that the viscosity of a gas equals (0.499)mv / [√2 πσ2 (1 + C / T )], where m is the mass of a molecule, v its average speed, σ its collision diameter, C the Sutherland constant, and T the absolute temperature (Kelvin scale). |
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