# How does polarisation of EM wave work?

by serverxeon
Tags: polarisation, wave, work
 P: 98 Does it removes either the electric wave of magnetic wave component of the EM wave? And if so, won't the wave exiting the polariser not a EM wave anymore? More like an E wave or M wave. If the above argument is correct, won't the speed of light become$$\frac{1}{\sqrt{\epsilon_{0}}}$$ or $$\frac{1}{\sqrt{\mu_{0}}}$$