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Science

duncang

(3,767 posts)

1. Aluminum is paramagnetic but will still levitate.

Reply to Judi Lynn (Original post)

Wed Sep 25, 2024, 07:10 AM

Sep 2024

When near a AC powered coil. I helped my daughter do a science project with it. Using a switch, 110 vac coil and iron core with a rod in it. Then the bottom of an aluminum can with a hole that fit loosely on the rod. It lifted the disc about an inch. If it had a stronger coil it would have been higher.

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Bismuth is so strongly repelled from magnets, it levitates. How? [View all] Judi Lynn Sep 2024 OP

Aluminum is paramagnetic but will still levitate. duncang Sep 2024 #1

In that case, the repulsion is due to the opposing magnetic field formed by current flow induced in the aluminum. sl8 Sep 2024 #3

My students always stare when I pull Lenz's law out of the air for a demo Igel Sep 2024 #4

Moved post. nt sl8 Sep 2024 #2