I know that this question may sound silly , but I really can't get the difference between intensity and density in general ! And the whole magnetic field thing makes it worse , in my textbook , its written that magnetic field intensity is the same as magnetic flux density , but no matter how many times I research it on the internet , I find people saying that the two terms greatly vary ! How come is intensity the same as density ? then why isn't intensity a physical property as density ? Please help !