2 ms·

For now. If you want to use one for long term energy storage, though, you're going to need to invent some kind of room temperature superconductor and frictionle

For now. If you want to use one for long term energy storage, though, you're going to need to invent some kind of room temperature superconductor and frictionless surfaces. Who knows whether those would be noxious or not.

smaddox 8y ago
Why? Magnetic bearings and copper work just fine...