I don’t understand French nearly well enough to understand the explanation in this video, but I was amazed at what the physical world can do when I saw this video.
(Video courtesy of Wimp.com.) What’s going on here? Well, you’ve got:
- a series of bar magnets on the bottom,
- a ceramic cylinder,
- an insulating, non-magnetic piece of plastic between the magnets and cylinder,
- and liquid nitrogen being poured into the cylinder before the insulator’s removed.
Amazing! For those of you who like puzzles, you’ve got until tomorrow’s post goes up to figure it out. (I’ll give you a hint: Walther Meissner.) What’s going on here, and how does this work when you’re upside-down?