fun with science

alien42

Lifer
Nov 28, 2004
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Originally posted by: CraKaJaX
Haha, sweet. Is that the same kind of magnet as like, an earth magnet?
it doesnt appear to be a rare earth magnet in the video, not strong enough.
 

alien42

Lifer
Nov 28, 2004
12,879
3,306
136
Originally posted by: Nohr
Originally posted by: alien42
Originally posted by: CraKaJaX
Haha, sweet. Is that the same kind of magnet as like, an earth magnet?
it doesnt appear to be a rare earth magnet in the video, not strong enough.
Neodymium magnets are rare-earth magnets.
yeah, i just read on his site that they are neodymium

 

BrownTown

Diamond Member
Dec 1, 2005
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I've seen that done before. However with a little extra work you can actually make a DC motor that works like in real life. Theres a good video if anyones ever seen it of a gatorade bottle with 2 rare earth magnets used as the rotor of a DC motor thats pretty cool. Just add a coil with alternating DC currents to attract and repel the magents and boom it spins around.
 

DrPizza

Administrator Elite Member Goat Whisperer
Mar 5, 2001
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www.slatebrookfarm.com
Yep, cool. Doesn't necessarily need a neodymium magnet though. Do a google search for "simplest motor" - it's a common science fair or class type of project. I've seen contests where kids make their own in class. The contest part is "whose will run the longest." All brand new batteries from the same pack to be fair. (And a camera to take pictures every minute or so overnight.)

Yes, the pictures work; if it's moving, you can tell from one picture to another if it's in the same place or a different place...