Electromagnetic waves move through the space by varying electric and magnetic fields in the space.
My question is that how can they cross a material through which which there is no magnetic field. I am talking about superconductor.
As it is known by meisseiner effect that superconductor is a perfect diamagnetic
Then if a wave approaches a superconductor electric field would pass but magnetic field cannot hence no em wave through superconductor and hence beyond it