3 ms·

I think he's referring to inductrack: https://en.m.wikipedia.org/wiki/Inductrack https://en.m.wikipedia.org/wiki/Inductrack Never really took off due to IP, w

• jacquesm 3y ago
  No, I'm referring to a circular arrangement, not a planar one, but the effects are much the same, think of it as a rolled up version of a Halbach array with coils connected across the opposing sides in such a way that bringing the coil closer to the side will increase the attractive force on the other side. It's a pretty clever arrangement, that requires no control electronics and has very low loss once it has centered itself.