In the electromagnetic spectrum there is a range which came to light just about 40 years ago. This range is the radio wave region. The energy of this wave can excite the spin-moments of the nucleons in the nucleus or that of the electrons on the shell depending on its wavelength. The strengths and weaknesses of one of the two methods fortunately are of those kinds which supplement the holes and gaps in the other method to make it possible . There may be several instances when only one method could be used. If the two methodologies had the same basics, principles, strengths and weaknesses we may be not capable to solve lots of structural problems. We should thank this possibility to the technical development which could catch different biophysical principles.
