Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Spin stabilized magnetic levitation is a phenomenon of magnetic levitation where a magnet is levitated via magnetic repulsion above another magnet or array of magnets, and stabilised by gyroscopic effect due to a spin that is neither too fast, nor too slow. The phenomenon was originally discovered through invention by Vermont inventor Roy M. Harrigan in the late 1970s. A Delaware inventor named Joseph Chieffo who was not previously aware of Harrigan's invention made the same discovery in 1984 (using a somewhat different device configuration from Harrigan's).