If you look closely during the first second of play, you will see a dust particle being illuminated with the spinning beam.
Laser below Ferrocell. Beam entering rear, center of cell.
small piece of black tape blocks z-axis of laser, top center.
if you can't watch this on your computer, click here to see on Youtube
Here's another movie showing rotation around the Z-axis.
This is an inductor test before final assembly of an EDU.
I'm using a 1 Hz rotating quadrupole field induced into a 45mm
cell positioned on top of the inductor core tips. A bronze spacer
with a fiber end-plate is positioned on top of the cell .
if you can't view this movie on your computer, click here to watch on Youtube