My first brush with MagLev or Magnetic Levitation was during my 12th standard. That concept was not a part of my syllabus, but our physics tuition teacher saw it fit to educate us as to how bullet trains work. MagLev then came back to haunt me during my engineering coursework. No doubt, it is an interesting topic, but if the person teaching it does nothing but just name dropping, it would obviously lead to boredom.
Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations.
The two primary issues involved in magnetic levitation are lifting forces: providing an upward force sufficient to counteract gravity, and stability: ensuring that the system does not spontaneously slide or flip into a configuration where the lift is neutralized.
Reminds me of the levitation charm from Harry Potter. This one reference I can’t help but make here. Wingardium Leviosa! boom! you can levitate a damn train or whatever you want. Just that you can try that with humans. How I wish I could levitate things as I walk, that would make a lot of things easier (but errr……………… on the hindsight, it would cause traffic up there and would possibly interfere with choppers and planes?)
The practical uses of Magentic Levitation include maglev trains, contactless melting, and magnetic bearings. Here is a little video of Maglev explained.
This is one interesting concept from physics. Do read and watch the video!