Planck’s equation describes the quantity of spectral radiance at a particular wavelength radiated by a black body in equilibrium. The equation is E=hv. This equation says that the energy of a particle of light (E), known as aphoton, is proportional to its frequency ( v), by a continuing...
It was only gradually that the paradoxical, almost irrational, character of Planck's equation ɛ = hv was fully realized by physicists. This was brought about mainly by the work of Einstein and Bohr. On the basis of Planck's theory, Einstein (1879–1955) revived in 1905 the corpuscular ...
assumption that the energy emitted by an oscillator is an integral multiple of the quantityhv,where v is the frequency of radiation and h is a new universal constant, which Planck called the elementary quantum of action (Planck’s constant). He later tried in vain to incorporatehin the ...
普朗克公式在高频范围hvkT的极限条件下,过渡到维恩公式此式表明,w(v,T)随着v的增加很快地趋近于零,也就是说在热平衡状态下,几乎不存在高频光子,这是因为高频光子的能量远大于kT,而腔壁发射这样高能量的光子的几率是极小的。普朗克公式在低频hv<的极限条件下,过渡到瑞利-金斯公式,这正是以经典统计理论为基础的...
Ribeiro, M.A.Ribeiro, H.V.Lenzi, E.K.Physics Letters AD. Marin, M. A. Ribeiro, H. V. Ribeiro, and E. . Lenzi, "A nonlinear Fokker-Planck equation approach for interacting systems: Anomalous diffusion and Tsallis statistics," Physics Letters A, vol. 382, no. 29, pp. 1903-1907,...
quantums. The energy associated with each quantum is measured by multiplying the frequency of the radiation, v, by a universal constant, h. Thus, energy, or E, equals hv. The constant, h, is known as Planck's constant. It is now recognized as one of the fundamental constants of the ...
C Gielen,HV Winckel,M Min,... - 《Astronomy & Astrophysics》 被引量: 87发表: 2008年 Migration of protoplanets in radiative discs Context. In isothermal discs, the migration of protoplanets is directed inwards. For small planetary masses, the standard type I migration rates are so hig... ...
E = εσT4 where ε is the emissivity. (See later section on emissivity and note 1). Note that so long as the Planck equation is true, the Stefan-Boltzmann relationship inevitably follows. It is simply a calculation of the total energy radiated, as implied by the Planck equation. ...
Kontinuierliche ProzesseKonvektions‐Diffusions‐ModellMischenContinuous processesConvection diffusion modelLimestoneMixingOne way to explain the mechanism of powder mixing is the Fokker-Planck equation. The equation comprises two decisive parameters, the transport coefficient U that depends on the active ...
3) Fokker Planck equation 福克-普朗克方程 1. For white and O U correlatednoises driven systems, Fokker Planck equations are established and the steady probability distributions are given. 对关联白噪声和关联O-U噪声驱动系统分别建立了福克-普朗克方程,并举例解出定态几率分布。4) Fokker-Planck ...