The polarization of a wave with electric field vector $$\overrightarrow E = {E_0}\,{e^{j\left( {\omega t - \beta z} \right)}}\left( {\overrightarrow {{a_x}} + \overrightarrow {{a_y}} } \right)$$ is

The intrinsic impedance of a lossy dielectric medium is given by

Copper behaves as a

A plane electromagnetic wave traveling along the +z-direction, has its electric field given by E_x = 2 cos $$\left( {\omega t} \right)$$ and E_y = 2 cos $$\left( {\omega t + {{90}^ \circ }} \right)$$ the wave is