3 ms·

Naïve Math: The Mendocino Motor and Earnshaw's Theorem

• mcguire 8y ago
  Ok, so how are these things stable? https://duckduckgo.com/?q=floating+magnetic+globe&t=fpas&ia=web https://duckduckgo.com/?q=floating+magnetic+globe&t=fpas&ia=... Yes, the base is an electromagnet, but AFAIK the field is static when energized.
  • dubya 8y ago
    The field is not static when energized. The hanging ones are not too hard to make with a Hall effect sensor and an electromagnet. This is a good explanation: https://www.kjmagnetics.com/blog.asp?p=electromagnetic-levitation https://www.kjmagnetics.com/blog.asp?p=electromagnetic-levit...
    • mcguire 8y ago
      Neat. Now I am impressed.