Where D x and D y are diffusion constants; \ alpha is the linear wind velocity in the x direction, \ beta is the linear wind velocity in the y direction.
22.
Where D _ s is the diffusion constant of the solute in the substrate, c _ o is the concentration in the channel, and R is the consumption by the cells.
23.
For a P-type region, where holes conduct with electrical conductivity " ? " and diffuse with diffusion constant " D ", the net current density is given by
24.
The room temperature diffusion constant for electrons at �s " 1 is significantly larger than that of Si, GaAs, Ge or InP, and determines the ultra-fast response of photodetectors.
25.
This is because there is a lack of convection in the water, and the oxygen is being subtracted more quickly than it can diffuse ( due to oxygen s slow diffusion constant through water ).
26.
However, in this context it becomes inaccurate when the diffusion constant is low and the radiation becomes limited by the speed of light rather than by the resistance of the material the radiation is flowing through.
27.
Hence, f _ { tot } can be measured directly using analytical ultracentrifugation, or indirectly using various methods to determine the diffusion constant ( e . g ., NMR and dynamic light scattering ).
28.
Where \ upsilon _ D \, is velocity of the particles, \ q \, is the amplitude of the scattering vector, and \ D \, is the translational diffusion constant of particles.
29.
In the case of Rotational diffusion, the friction is \ zeta _ \ mathrm { r } = 8 \ pi \ eta r ^ 3, and the rotational diffusion constant D _ \ mathrm { r } is
30.
From the diffusion equation it can be shown that the distance a diffusing particle moves in a medium is proportional to the root of the time the system has been diffusing for, where the proportionality constant is the root of the diffusion constant.
