| 摘要 |
A magnetic toy having two separate parts: a first part comprising a single magnet and a second part comprising a plurality of magnets held in fixed configuration to one another, and the relative strengths of the magnets being such that as the first part is moved towards the second part the magnetic force between the two parts will initially result in attraction of the two parts but at some point as the two parts become closer the direction of the magnetic force between the parts will reverse resulting in the two parts repelling one-another. |
