From wikipedia: "An electromagnetic wave such as light consists of a coupled oscillating electric field and magnetic field which are always perpendicular; by convention, the "polarization" of electromagnetic waves refers to the direction of the electric field." A polarizer is an object that acts on electric field identically as on magnetic field with a 90 degrees orientation difference. Is there any object that behaves to these fields (electrical and magnetic) differently? e.g. Has the max transparency when the angle between these two fields is not 90 degrees?