K-13-N Steel sphere

• These are NOT magnets, but nickel-plated steel spheres.
  For combining with other magnets, e.g., with rod magnets (see photos).
• Not magnets... steel spheres.
• For beginners...
• ... and advanced
• From above.
• Dramatic enough?
• Somewhere in the midst of these steel spheres, there is one K-19-C.
• Note: only the large sphere (K-19-C) on top is magnetic. The other 8 are simple, non-magnetic, steel spheres that are magnetised through the one magnetic sphere.
• This structure rotated with a single push for 25 minutes! The explanation for this is the low amount of friction and the minimal amount of aerodynamic resistance. The low friction stems from the two steel spheres (on top) having contact over a very small surface area only and also because the structure is so heavy, that it is nearly ready to fall. By the way, the two steel spheres are not magnets, but are magnetised through the rod magnets.