3 ms·
Is it using an electromagnet? or is it moving a permanent magnet around inside?
by jugg1es 6y ago
Is it using an electromagnet? or is it moving a permanent magnet around inside?
- utexaspunk 6y agoIt looks like a permanent magnet: https://spectrum.ieee.org/image/MzcxMTU3OA.jpeg https://spectrum.ieee.org/image/MzcxMTU3OA.jpeg