Science

World’s Most Perfect Pair Of Balls

This is one of the two most perfect spheres ever. Exactly one kilogram—Imperial units be damned and forbidden forever—smooth to the nearest 0.0000000003 meter (1.18110236 × 10-8 inches,) and round to within 0.00000005 meters (1.96850394 × 10-6 inches.)

They were made using silicon by metrologists from the by Australia’s Commonwealth Scientific and Industrial Research organisation. [Makezine]

Comments (AU Comments | US Comments)

  • Peter

    Nice balls

  • Adam

    as long as they’re not touching

    • MDolley

      that’s why one sits lower than the other.

  • chuck bulimic

    One must wonder why after damning imperial measurements to all eternity , you then proceed to quote them ?

  • Kif

    O…..K. Why?

  • hugh

    viva la metric

  • DcB

    They’re round, but not chocolate, or salty..

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