f0 50[Hz] "Supply frequency"
Ni 960 "Number of turns in inner coil"
No 576 "Number of turns in outer coil"
sigma 3.4e7[S/m] "Conductivity of aluminum"
I0 20[A] "Coil current"
d_wire 1.2[mm] "Coil wire diameter"
M_disc 0.107[kg] "Mass of aluminum disc"
z0 3.8[mm] "Initial position of aluminum disc"