1. The Levitron is available from ‘Fascinations’, 18964 Des Moines Way South, Seattle, WA 98148.
2. Hones et al., U.S. Patent 5404062, Date of Patent:, 4 April 1995.
3. The U-CAS is available from Masudaya International Inc., 6-4, Kuramae, 2-Chome, Taito-Ku, Tokyo, 111 Japan.
4. Magnetostatic trapping fields for neutral atoms
5. The Levitron
TM
: an adiabatic trap for spins