Why is it that a radio wave or a microwave is not affected by a magnetic field from a electromagnet or bar magnet? I know they are self contained and so no outside force should effect them but that I can't get my head around. The idea I have is that since the Electromagnetic field is oscillating, the bar magnet or electromagnet actually do affect the microwaves or radios waves magnetic component. The key though is the oscillation part, since the magnetic field component of the electromagnetic wave is going north then south and so on constantly, it creates a push pull from the bar magnet or Electromagnet. Thus the push then pull creates a net force of zero causing no change to the radio wave or Microwave. However if you could sync the Electromagnets frequency with that of the microwave for example so they ware in phase with each other, you could get the Electromagnet to always cause a push or pull on the microwave's magnetic field component causing it to bend either way or toward the electromagnet. I also think you might be able to stop the microwave entirely by canceling out it's magnetic field component. However I am really not sure on this one, I don't think it would work because even if you cancel it out, the magnetic field is still there, your just opposing it and causing a net field between the two of zero. Like two opposing Electromagnets, there fields are still there but in the middle, there is a point of zero field strength. Also I know That since Photons are charg-less and so cannot be effected by magnetic or electric fields, but I need a more in depth explaination as to why. Is the answer as to why light can not be bent that because electric and magnetic fields are created by the photon which is charg-less ( so no direct interaction can happen) however anything effecting the magnetic or electric component won't effect the photon either because the photon is moving at light speed and since the interaction with the magnetic field is behind or to the side of the photon, no information can make it's way back and cause a force on the photon? I say to the back or to the side because the photon can't create a magnetic field or electric field in front of it since those fields would now have moved faster then light speed and no interaction can happen before the fields are there. So is this right.