text: Yo, listen up, let me school ya 'bout nuclei in a fluid
  When they hit some polarized light, they get magnetic field, it's not rude
  The field is proportional to E(+/-) x E(+/-), that's the electric vector of the polarized waves
  And the dot represents a time derivative, it's what science says
  
  The strength of this field depends on the local electronic structure
  And you can find it in all atoms, that's the feature
  If the intensity is 10 watts per square centimeter and it's going in the direction of the field
  Then for protons, there's a +/- 4 x 10(-8) hertz shift, and for fluorine-19, it's +/- 10(-5) hertz, that's the deal
  
  And if the laser frequency is near an optical absorption
  Then the shifts get even larger, that's the conclusion
  So now you know, the theory presented here is general
  And you can use it to predict shifts, it's not just a ritual.