Magnetic Puzzle

Forum for the sharing and discussion of various research projects going on.
Post Reply
BioHacker
Gregralis
Gregralis
Posts: 4
Joined: Thu Oct 20, 2016 10:02 pm

Magnetic Puzzle

Post by BioHacker » Tue Oct 30, 2018 10:39 pm

Here is an interesting 3:33 minute magnetic puzzle video.


User avatar
LoneBear
Legatus Legionis
Legatus Legionis
Posts: 3969
Joined: Thu Jul 22, 2004 12:38 am
Location: Salt Lake City, UT
Contact:

Re: Magnetic Puzzle

Post by LoneBear » Wed Oct 31, 2018 10:46 am

(I fixed your YouTube link to display it inline.)

Magnetism is greatly misunderstood, no doubt about that. Most of the problems come from the use of iron filings to express "lines of force." Iron is paramagnetic, so they turn in to little magnets in a magnetic field--they are not inert. They form lines because N-S connect, and run parallel because N-N and S-S repel. It actually ISN'T the course of the magnetism. Ken's approach of using single objects to explore magnetic fields makes a lot more sense to me.

Reminded me of long ago when I asked my 7th grade science teacher, Mr. Anthony, why things stuck to the edge of a magnet and not the middle (where the field was supposedly the strongest). All he said was, "that's a good question!" then went on to discuss something else.
Keeper of the Troth of Ásgarðr, Moriar prius quam dedecorer.

Post Reply