Magnetic field viewer

yap its cool

can we put the steel wool in a water or we have to use a baby oil?

if you put it in water it would probably all just go straight to the magnet. but since baby oil is thick it will go slow, showing the field.

Thank you very much! I could use this for our science fair :D

wow... that was really cool!!

nice tank u for giving me an idea for my science project!!!!!!!!!

hmm i once burnt a video cassette (just the magnetic film strip) and crushed the ash and it made a very sensitive magnetic powder (I think it must of left magnetite or some form of iron oxide and just burnt the plastic strip away). I wonder if you could use that in the oil? Probably. I was just thinking of something that could maybe let you put a little more in the oil so you could see it a little clearer. Or does it get too cluttered?

geniusly

And with thin fibers, you have enormous surface to volume ratio. It doesn't take much surface rust before the fibers are gone. Melt them all into a spherical droplet, and it might take weeks or months to rust it all away.

The fibers even rust in oil, but it takes years. The fibers survive, but the oil turns reddish color.

I remember the experiment during the school years but it was different. They use to apply the iron fibers on a paper or a plexiglas surface, and use the magnet from below the paper. Or they had a solenoid attached to the plexiglass, dropping the fibers on the surface. When we applied the battery at the solenoid, the magnetic field showed clearly.