hi pf, i have been trying to understand since last few weeks how electromagnetic waves, say light travels? Not the way transverse waves do. It must require a medium. Then in vacuum how light travels? you may answer that with oscillating electric fields and magnetic fields at perpendicular to each other, but i ask where from this electric field & magnetic field come in vacuum.
for example- if i consider the emission of radiation as em waves due to excitation of an electron in an atom, then how will the magnetic field and electric field be produced throughout the propagation of light (in this case)? i want to know exactly how it works? thanks in advance ...
for example- if i consider the emission of radiation as em waves due to excitation of an electron in an atom, then how will the magnetic field and electric field be produced throughout the propagation of light (in this case)? i want to know exactly how it works? thanks in advance ...