Recent content by ohrehman

Yeah - supposing it cools down below `Tc`, and then starts levitating. A friend of mine had an interesting explanation that the energy that levitates it is the energy that is input to initially cool down the superconductor. Which makes sense, because as the energy is radiated/ convected away...

Okay - but that explains Meissner effect. What I am asking is this: Suppose you had a superconductor sitting on a magnet. As you pour liquid nitrogen over this superconductor, it will reach Tc and start levitating (due to the explanation you provided). Where does this GPE come from?

Hey all, So there are numerous posts here about the Meissner effect and the conflicting "opinions" about it. What I haven't read though, is how a superconductor can oppose the gravitational pull of the Earth? I don't believe you need to know this for the HSC, but I'm curious.