The “splitting” of atomic states in a magnetic field is call the Zeeman effect
The “splitting” of atomic states in a magnetic field is call the Zeeman effect
there are always an odd number of values of the m quantum number, but the experiments usually found the states were split into an even number of states!!
A more direct method was devised to measure the L of an atom, by Otto Stern.
A constant magnetic field exerts no net force on an atom, BUT
Stern made beams of atoms and found a way to deflect them by an angle proportional to their magnetic moment