| 主权项 |
1. A levitation device comprising:
a housing supporting a launch platform for spinning a top on said platform; at least one base magnet mounted in said housing, said base magnet having a magnetic field with a polar orientation along a substantially vertical axis; at least one second magnet having a magnetic field whose intensity of interaction is selectively variable, said second magnet magnetic field having a pre-selected polar orientation that is the same as, or opposite, the polar orientation of the base magnet, said second magnet thereby functioning respectively as a repeller or attractor magnet, said magnet magnetic field axis substantially parallel to the base magnet axis; and a spinning top including a magnet having a magnetic field with a polar orientation along a substantially vertical axis parallel to said base magnet axis, said spinning top magnet having a polar orientation opposite to said base magnet when said top is spinning on or above said platform. |
