spinning tops

These ballet dancers are spinnings tops made by the Canadian manufacturer foreverspin. All have identical size and shape, thus the individual mass varies with the density of the used metal. These dancers were made from aluminum (Al, ρ = 2.7 g/cm3), zirconium (Zr, ρ = 6.52 g/cm3) and humanium (Hu, ρ = 7.94 g/cm3), respectively. Therefore Humanium has the best stamina for spinning and transmits the strongest impulse on its peers.
Snapshots of their performances are found in the gallery.

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