13 Engineering and Motors
Fun with a Hovercraft and Spin Art
You can tinker with circuits, magnets, and mechanics separately and come up with hundreds of great projects, or you can put them together and invent go-machines of all shapes and sizes. The trick is to get a hold of a little hobby motor.
A motor is an amazing thing. The first one was developed by Michael Faraday in 1821, just one year after Hans Christian Orsted accidentally stumbled upon the link between electricity and magnetism. Up until then, electricity, magnets, and motion were all separate areas of research and tinkering. Orsted noticed that electric current makes a magnetic field, ...