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Slowest rotating manmade object

Slowest rotating manmade object
Who
T.J. Bivins
Where
United States (Wellsville,)
When
11 October 2004
The last sprocket in a set of reducing gear wheels in a demonstration apparatus designed by TJ Bivins of Wellsville, Kansas, USA, rotates so slowly that it would take 3,800,007,600 years for it to complete one revolution. The assembly is driven by a motor turning at 1,550 rpm.