View Single Post
Blastrix91
#1
Nov25-12, 06:17 AM
P: 25
The divergence of a vector field tells us how many field lines goes into a volume element in relation to how many goes out.

So if div B = 0 there should be the same amount of magnetic field lines going into a volume element as are going out of it right?

But the Biot-Savart equations tells us that the magnetic field decreases by r^2 the further away you go. Could somebody help me out in pointing where I got the concept wrong?
Phys.Org News Partner Physics news on Phys.org
Step lightly: All-optical transistor triggered by single photon promises advances in quantum applications
The unifying framework of symmetry reveals properties of a broad range of physical systems
What time is it in the universe?