Coil a lead wire around a big full metal cylinder (must be magnetizable) and attach one end to a big ass antenna and the other in the ground, then wait for lightning to strike the antenna. Although the amount of power will probably melt everything.
Or you can just read this: sciencing.com/make-super-strong-permanent-magnets…
dx1@lemmy.world 1 year ago
Expose molten ferromagnetic metal to … a magnet.