3 ms·
The brushes are almost certainly graphite, which actually isn't a metal. Also graphite is diamagnetic, so strong magnets actually push it away.
by slackdog 4y ago
The brushes are almost certainly graphite, which actually isn't a metal.
Also graphite is diamagnetic, so strong magnets actually push it away.
- GeorgeTirebiter 4y agoSince we're speculating, the brushes could also be some harder material, with Carbon Nanotubes impregnated, or graphene infused and coated, etc. Also, although I don't have the numbers for your issue about strong magnets pushing it away, I've found you need REALLY strong B Fields to do this. In other words, are we sure this is an effect that is at play here? (I'm asking)