A flowing electrical current generates a magnetic field. This is the most primitive DC engine I think I've ever seen.
The things on the end are a) wheels and b) contacts. Nothing hidden in them I think. The wire is just a copper wire, making contact between the two poles and enabling the current. It probably also gets hot as blazes if you leave it running.
(no subject)
Date: 2016-06-21 01:11 am (UTC)The things on the end are a) wheels and b) contacts. Nothing hidden in them I think. The wire is just a copper wire, making contact between the two poles and enabling the current. It probably also gets hot as blazes if you leave it running.