Fig. 3. (Color online) Magnetic fields of square (cyan square, □) and circular (orange circle, ◯) neodymium (NdFeB) magnets measured at distance z from the magnet surfaces. The colored lines represent least-square fits to the data points, exhibiting a 1/z3 dependence. The inset shows the calculated magnetic fields near the magnets based on these fitted functions.
© NPSM
