I have a 5mm diameter, 10mm long magnet, a short (6mm) coil of 50mm diameter, and an oscilloscope. When I move the magnet through the coil, the oscilloscope shows that the signal (voltage) looks pretty much like the derivative of a Gaussian function. So there must be magnetic flux maximum when the magnet is in the center of the coil. According to the Gauss law, there should be a minimum of flux placed between two maxima (when the magnet is in the center of the coil, the flux that goes through the magnet comes back on the outside of the magnet and mostly inside the coil, because the coil is large). What should I think about it?