Vacuum polarization is when an EM field causes the virtual particle pairs around it to become polarized like a dipole. The most common example is with an electron in vacuum, but a transmitting radio antenna could do it as well. But, if this was with an oscillating signal, it would create waves of change of orientation in the virtual particle pairs around it, my theory of EM waves. Each VPP (Virtual Particle Pair) would in turn have another EM field, changing the orientation of further VPPs, creating an EM field, which would in turn be switched around with an oscillation, creating a wave. This theory shows why, the larger an object in relation to wavelength, the less EM waves bend around it, because of the fact that each VPP has it's own EM field, which combines at the middle of each crest and trough, and interferes between each crest and trough. This interference limits how far an EM wave can disperse, dispersing less with high frequency, like zooming out on a sine wave until it looks solid, showing why radio waves disperse out a lot, but visible light casts a shadow. This also explains the common double-slit experiment, of two interfering EM waves, because EM waves disperse more with smaller scale. This would also explain the photoelectric effect, since an EM wave would jerk around an electron, but because a red EM wave has a lower frequency, it doesn't jerk it around as quickly, and only little of it is used, while a blue light will jerk it around more quickly so it can escape and produce electricity. This is my theory of EMR, and I would appreciate any feedback.