Ok this may be a silly question, but I have trouble grasping the function of the inverse square law and how it relates to the intensity of a magnetic field. It seems to me that if we take the same calculations of I2 = (I1 * D1^2) / D2^2 we come up with different real world answers based on which distance measurement we use. Is the only unit we can use here the meter? Example: D1 = 1m^2 = 1m D1 = 1000mm^2 = 1,000,000 or 1000m They are the same distance, yet they calculate differently with the square product. A re-wording I've seen of this function is that if you double the distance, you cut the intensity by 1/4. Must we know the strength of the source or can the source intensity be calculated by knowing a set intensity at a set distance? The problem occurs when I reach 1m and try to go below it. If we set D2 at 0.00000001m the square product shows the field essentially approaching infinity, which is certainly not what is hapenning. It then follows that below 1m, the field becomes infinitly stronger, which is wrong. Any clarity would be much appreciated.