Hi, I am curious about the most efficient method of levitating an object. I am considering using electromagnetic induction or the repulsion between a magnet and electromagnet. Which would require less energy? Also I am aware of Earnshaw's law; let's ignore the complexities it causes for now...
Hi,
I would like to know what would happen if you used a permanent magnet for the core of an electromagnet, instead of the standard ferromagnetic core? Can you increase the magnetic field strength of the permanent magnet by putting current through the coil? Also, could you effectively...
Yes, I suppose eddy current or diamagnetic levitation would work. Which of these would require less energy? I would like to be able to levitate the sphere for a couple hours at a time at least with a load of a couple hundred pounds or so, using a battery. How big of a battery would I need to...
Hi,
I've been doing some research on an idea of mine, part of which involves levitating a sphere. Apparently Earnshaw's theorem makes this very difficult; but I'm having a hard time imagining why. I'm imagining the sphere as a magnet, with the north pole over the entire outer surface of the...