 यार कुच दिक नहीं रहा है और वाज अख तो सब दिख रहा है इसे केतें पोलराइशेशें लाईट is an electromagnetic wave it consists of an electric field a quantity in space that is oscillating up and down in a perpendicular direction now to one direction there might be many perpendiculars which perpendicular direction is the electric field oscillating in this is called the direction of polarization of light we can say that apart from the propagation direction light has its own direction which is the angle or inclination of the plane of polarization of the light so basically light has a direction it can be either straight or at an angle or it can be mixed light that comes out of the monitor is straight if I keep my sunglasses like this then the light cannot go through them but if I straighten my sunglasses then the light is able to go through and I can see the monitor