A beam of polarized light passes through a polarizing filter. When the angle between the polarizing axis of the filter and the direction of polarization of the light is , the intensity of the emerging beam is I.
If you now want the intensity to be , what should be the angle (in terms of ) between the polarizing angle of the filter and the original direction of polarization of the light?
Express your answer in terms of the given variable.
alpha = ???
I understand that the angle must be 45 degrees but I have no clue on how to find alpha. Any help is appreciated! Thanks!!