Note that there may be dielectric permittivity " in addition to " the screening discussed here; for example due to the polarization of immobile core electrons.
12.
For magnetic materials, Brewster's angle can exist for only one of the incident wave polarizations, as determined by the relative strengths of the dielectric permittivity and magnetic permeability.
13.
Where \ epsilon _ r is the relative dielectric permittivity of the semiconductor, V _ { bi } is the built-in voltage, and V is the applied bias.
14.
A dielectric permittivity spectrum over a wide range of frequencies . " ? " 2 and " ? " 3 denote the real and the imaginary part of the permittivity, respectively.
15.
Currently it is not known if the superinsulation state they observed means the dielectric permittivity of the material approaches infinity, or whether the material just has zero conduction as would be found in a vacuum.
16.
The Stern model has its own limitations, namely that it effectively treats ions as point charges, assumes all significant interactions in the diffuse layer are Coulombic, and assumes dielectric permittivity to be constant throughout the double layer and that fluid viscosity is constant above the slipping plane.
17.
The frequency shift or phase shift of an incident laser beam caused by these moving particles is measured as the particle mobility, and this mobility is converted to the zeta potential by inputting the dispersant viscosity and dielectric permittivity, and the application of the Smoluchowski theories ( see below ).
18.
The physical constant, commonly called the "'vacuum permittivity "', "'permittivity of free space "'or "'electric constant "', is an ideal, ( baseline ) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum.
19.
Where ? 0 is the vacuum permittivity, ? r is the relative dielectric permittivity of water, a p is the equivalent spherical radius of the bacteria, ? is the inverse of Debye length, h is the separation distance between the bacterium and the collector surface; ? p and ? c are the surface potentials of the bacterial cell and the collector surface.
20.
Here's why . ( 1 ) Both reflectivities are governed by the same properties of the object ( namely, its dielectric permittivity and surface shape ), but at different wavelengths ( visible vs infrared light ) . ( 2 ) Good conductors, like Al, tend to have good reflectance both in visible and in IR . ( 3 ) The correlation is not always there because some materials have strong absorption at some wavelengths but not at others .-- talk ) 22 : 03, 26 October 2009 ( UTC)
