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单词 stokes' law
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Stokes' law
Stokes' law n. the statement (not always true) that in fluorescence the wavelength of the emitted radiation is longer than that of the radiation causing it. Also Stokes' line, Stokes shift, etc., with reference to spectral emission lines at a lower frequency than the stimulating or incident radiation.extracted from Stokesn.1
Stokes' law
Stokes' law n. (also Stokes' formula) the statement that the resisting force on a spherical particle moving through a fluid is 6πηVr (where η is the viscosity of the fluid, V the speed of the particle, and r its radius), so that its limiting rate of fall is 2gr2ρ/9η (where g is the acceleration due to gravity and ρ the difference in density between the particle and the fluid).extracted from Stokesn.1
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更新时间:2024/12/24 1:41:46