This question already has an answer here:
Lets assume a room with one or two sources of light (normal light bulbs or fluorescent lamps). So if we look at lamp from any direction we see it. We also see different objects in the room because of light reflected from it from the source. So I would like to visualize that at any point in space inside the room there is a EM wave with a particular E and H component. Also the room might be filled with Radio waves, Microwaves and other EM waves. So at any point in space the Electric and Magnetic field components are the sum of all these individual wave components at that point. Also if we specifically assume light then it will be sum of light directly coming from the source and other reflected components of that light. If that being true how are we able to see clearly, meaning we are able to see individual objects in a room distinctly without any interference from these reflected component. Also how these Radio waves, microwaves etc do not impact the images we see in any way. They are just Electric and magnetic fields oscillating at different frequencies but still they will have an impact on the the E and H components of visible light at all points in space inside the room.