MPEG Movies of Spherical Harmonics
I made these using opendx and mpeg2encode
It is best to save target, then run in Media Player
The view direction is from a 45 degree angle above the x-y plane and is rotating about the z axis.
Each harmonic is oscillating in amplitude, postivie to negative.
Nodes of zero value are illustrated by black circles .
Notice that if L=degree and M=order, then:
       
(1) The total number of nodal circles = L
       
(2) The number of latitudinal nodal circles = L-M
       
(3) The number of longitudinal nodal circles = M