The Homopolar Roller

When two neodymium disc magnets with like poles facing one another are attached to either end of a AA-battery, on dropping a copper connecting wire in the shape of the letter U onto the rims of each disc causes current to flow and results in magnetic forces acting on either wheel. The resultant magnetic torque arising from each force causes the arrangement to roll off with considerable speed.

Category:

Entertainment

Tags:

• homopolar
• physics
• demonstrations
• experiments
• neodymium
• roller

[MrfixitRick]

"World's Simplest Hotrod"!

[9enesis]

this one is great!:)

[0o0oyeah]

OMG that was great...nice one

[nicefade]

Somebody I know was a homo roller, now he's doing 6 months in county. Damn I wish I would have stuck it out longer than 1 day in chess club, I am sooooooooooooo jealous.

[jperelli]

this is really cool!! I havn't see any aplication of this motor on any place! But now I have seen that on this video! Maby it can be used to take the newspaper from the front door to the sofa :)

Thanks a lot!

[proNoobist]

cooooooooool (first comment?)