For shields made of dielectric materials absorption loss
occurs because currents induced in the medium produce ohmic losses and heating of the material so in this case [E.sub.t] and [H.sub.t] can be expressed as below :
Compared to intrinsic conductive polymers, PANI not only has specified reflective loss, but also has more absorption loss
to achieve the electromagnetic shielding.
The total shielding of a solid material with no apertures is equal to the sum of the absorption loss
(A) plus the reflection loss (R) plus a correction factor (B) to account for multiple reflections in thin shields.
4: Absorption loss
variation in x and y polarized lights for single gold.
In previously reported arrays of silicon nanobowl arrays (SNBs) embedded with metal nanoparticles , the overall absorption loss
is high due to serious light-decay in metal nanoparticles, leading to low power conversion efficiency.
This nonlinear behavior is most obvious under experimental conditions in which the optical absorption loss
dominates the total per-pass losses.
We calculate the total attenuation of signal on the bases of spreading loss  and thorps model for signal absorption loss
. At a given frequency f, the channel model calculates absorption loss
a(f)  as follows:
The insertion loss (transmission) and absorption loss
of barium niobate sample were measured by the rectangular waveguide reflectometer setup shown in Figure 6.
And L should include the following factors: 1 the ionospheric propagation loss [L.sub.p], which includes the absorption loss
, polarization loss generated by the Faraday effect, multipath effects, and so on; 2 the radar system loss [L.sub.s], which contains the loss produced by the weighting processing, the beam forming, the antenna efficiency, and so on; 3 sea wave additional loss [L.sub.w].
A dangling bond at the grain boundary causes absorption loss
that contributes significantly to transmission loss.
Meanwhile, the overall absorption loss
of the SRR metamaterial enhances.
Such wide absorption widths and high absorption loss
peaks indicate that it has wide application as microwave absorbing material.