1. The problem statement, all variables and given/known data The number density of 1H nuclei in the body is roughly 600 times greater than that of 13C nuclei. By what factor is the magnetisation M0 of 1H greater than 13C in the same external magnetic field? 2. Relevant equations 3. The attempt at a solution Surely it can't be as simple as dividing the gyromagnetic ratio of 1H by 13C? I've thoroughly went through my notes and have been unable to find any appropriate equation to solve this.