I am finding it very difficult to explain the Meisner effect to my high
school students and I wonder if someone can help to put it into their terms.
Explanations that I have read talk about "expelling the field" or
"preventing penetration of the field" by the superconducting material
but I have a difficult time seeing this as the source of an upward force
on the levitating magnet. And why is this upward force able to keep the
levitating magnet in balance so well since, if I tried to levitate one
magnet with another, I would have a very difficult time keeping it in
equilibrium.
Can someone fill in some details that high school students, and I, might
be able to grasp.