3 ms·
Did anyone notice the description for the image at the top of the article? My understanding is that this description is nonsense, but I am an amateur and would
by TaylorAlexander 3y ago
Did anyone notice the description for the image at the top of the article? My understanding is that this description is nonsense, but I am an amateur and would love some clarification:
“A superconducting magnet is cooled by liquid nitrogen, producing a strong magnetic field that causes the magnet to levitate.”
Like superconductors don’t float because they’re a “strong magnet” they float because they reject all magnetic fields beyond the London depth and this somehow leads to levitation. Right??
- rizzaxc 3y agoSC requires a critical temperature, so the "cooling" part leading to the "producing" part is correct
- TaylorAlexander 3y agoIs the producing part correct? My understanding is that once cooled they reject magnetic fields, not produce them. According to wikipedia: "The Meissner effect (or Meißner–Ochsenfeld effect) is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state when it is cooled below the critical temperature. This expulsion will repel a nearby magnet." https://en.m.wikipedia.org/wiki/Meissner_effect https://en.m.wikipedia.org/wiki/Meissner_effect