Template:Classification of materials based on permittivity

Classification of materials based on permittivity

Template:Math	Current conduction	Field propagation
0		perfect dielectric lossless medium
$\ll 1$	low-conductivity material poor conductor	low-loss medium good dielectric
$\approx 1$	lossy conducting material	lossy propagation medium
$\gg 1$	high-conductivity material good conductor	high-loss medium poor dielectric
$\mathrm{\infty }$	perfect conductor