The Skin Depth Of Isotropic Materials James Marek Advisor

the skin depth of isotropic materials james marek advisor: c.w. price the skin depth is the distance that an electromagnetic wav

The Skin Depth of Isotropic Materials
James Marek
Advisor: C.W. Price
The skin depth is the distance that an electromagnetic wave penetrates
into a material before it is attenuated to 1/e (.367) of its original
amplitude. For a wave of angular frequency  that encounters a sheet
of a good conductor, the attenuation of the electromagnetic wave obeys
A=A0 Exp[-d/], where  = (2/)1/2 and d is the thickness of the
sheet. From this result the slope of ln(amplitude) vs. thickness is
inversely proportional to the resistivity (=1/) of the material. 
can be found by placing a conducting sheet between a source of an
electromagnetic plane wave and a detector. So far I have measured the
magnetic shielding of mutual inductance between two inductors. This
however, at low frequencies (<500 Hz) matches the model for the
attenuation of an electromagnetic plane wave, but more analysis is
needed to connect the two models. The resistivity at 500 Hz using
aluminum as a conductor was similar to published results.