Video: "World's Simplest Electric Train"



That is super cool.

So the magnets on the end of the battery touch the wire, creating a circuit through the coil right where the train is. This circuit induces a thrust on the magnets.

With so few turns right around the train, and many of them probably touching and shorting out, Iā€™m amazed it can generate enough thrust to push the thing. Presumably the initial push is necessary to get it to overcome friction.


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