Assuming string theory is on the right track, would the electromagnetic field of some radio station antenna be given by some collective motion of string theory strings in their curled-up dimensions and the dimensions of space? If a string moves at the speed of light doesn't it have to be mass less? As strings move in our 3 dimensional space I assume they are also moving in the extra hidden dimensions? As the wavelength of the electromagnetic radiation gets very long and the energy of individual photons becomes very small how should we picture the string motion giving rise to these small energies compared with string motion representing a massive particle like an electron? Thanks for any thoughts.